Home / 720,066.11-992,947.01-618,428.12

Finding the Fourth Proportional to 720,066.11, 992,947.01 and 618,428.12

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Solution

The fourth proportional to 720,066.11, 992,947.01 and 618,428.12 is: 852,791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,066.11 : 992,947.01 = 618,428.12 : x
  2. Step 2: Convert to fraction form
    720,066.11/992,947.01 = 618,428.12/x
  3. Step 3: Cross multiply
    720,066.11x = 992,947.01 × 618,428.12
  4. Step 4: Simplify right side
    720,066.11x = 614,066,344,597.05
  5. Step 5: Solve for x
    x = 614,066,344,597.05/720,066.11
  6. Step 6: Final answer
    x = 852,791.63

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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.