Home / 719,233,285.10-991,995,016.23-618,930,781.97

Finding the Fourth Proportional to 719,233,285.10, 991,995,016.23 and 618,930,781.97

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Solution

The fourth proportional to 719,233,285.10, 991,995,016.23 and 618,930,781.97 is: 853,653,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,233,285.10 : 991,995,016.23 = 618,930,781.97 : x
  2. Step 2: Convert to fraction form
    719,233,285.10/991,995,016.23 = 618,930,781.97/x
  3. Step 3: Cross multiply
    719,233,285.10x = 991,995,016.23 × 618,930,781.97
  4. Step 4: Simplify right side
    719,233,285.10x = 613,976,251,100,616,832
  5. Step 5: Solve for x
    x = 613,976,251,100,616,832/719,233,285.10
  6. Step 6: Final answer
    x = 853,653,833.64

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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.