Home / 1,398,605,701.68-1,930,066,049.78-763,526,193.45

Finding the Fourth Proportional to 1,398,605,701.68, 1,930,066,049.78 and 763,526,193.45

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Solution

The fourth proportional to 1,398,605,701.68, 1,930,066,049.78 and 763,526,193.45 is: 1,053,660,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,605,701.68 : 1,930,066,049.78 = 763,526,193.45 : x
  2. Step 2: Convert to fraction form
    1,398,605,701.68/1,930,066,049.78 = 763,526,193.45/x
  3. Step 3: Cross multiply
    1,398,605,701.68x = 1,930,066,049.78 × 763,526,193.45
  4. Step 4: Simplify right side
    1,398,605,701.68x = 1,473,655,984,091,784,192
  5. Step 5: Solve for x
    x = 1,473,655,984,091,784,192/1,398,605,701.68
  6. Step 6: Final answer
    x = 1,053,660,786.83

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Double scale
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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.