Home / 1,388,871,490.16-1,918,233,356.40-914,681,590.26

Finding the Fourth Proportional to 1,388,871,490.16, 1,918,233,356.40 and 914,681,590.26

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Solution

The fourth proportional to 1,388,871,490.16, 1,918,233,356.40 and 914,681,590.26 is: 1,263,308,196.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,871,490.16 : 1,918,233,356.40 = 914,681,590.26 : x
  2. Step 2: Convert to fraction form
    1,388,871,490.16/1,918,233,356.40 = 914,681,590.26/x
  3. Step 3: Cross multiply
    1,388,871,490.16x = 1,918,233,356.40 × 914,681,590.26
  4. Step 4: Simplify right side
    1,388,871,490.16x = 1,754,572,736,921,729,536
  5. Step 5: Solve for x
    x = 1,754,572,736,921,729,536/1,388,871,490.16
  6. Step 6: Final answer
    x = 1,263,308,196.15

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Double scale
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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.