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Finding the Fourth Proportional to 720,030.88, 992,898.36 and 618,392.88

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Solution

The fourth proportional to 720,030.88, 992,898.36 and 618,392.88 is: 852,742.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,030.88 : 992,898.36 = 618,392.88 : x
  2. Step 2: Convert to fraction form
    720,030.88/992,898.36 = 618,392.88/x
  3. Step 3: Cross multiply
    720,030.88x = 992,898.36 × 618,392.88
  4. Step 4: Simplify right side
    720,030.88x = 614,001,276,387.68
  5. Step 5: Solve for x
    x = 614,001,276,387.68/720,030.88
  6. Step 6: Final answer
    x = 852,742.98

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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.