Home / 1,388,871,488.66-1,918,233,354.33-914,681,588.76

Finding the Fourth Proportional to 1,388,871,488.66, 1,918,233,354.33 and 914,681,588.76

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Solution

The fourth proportional to 1,388,871,488.66, 1,918,233,354.33 and 914,681,588.76 is: 1,263,308,194.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,871,488.66 : 1,918,233,354.33 = 914,681,588.76 : x
  2. Step 2: Convert to fraction form
    1,388,871,488.66/1,918,233,354.33 = 914,681,588.76/x
  3. Step 3: Cross multiply
    1,388,871,488.66x = 1,918,233,354.33 × 914,681,588.76
  4. Step 4: Simplify right side
    1,388,871,488.66x = 1,754,572,732,150,988,288
  5. Step 5: Solve for x
    x = 1,754,572,732,150,988,288/1,388,871,488.66
  6. Step 6: Final answer
    x = 1,263,308,194.09

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Half scale
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Double scale
Find fourth proportional to 1,388,871,489.66, 1,918,233,355.71 and 914,681,589.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.