Home / 687,002.40-1,027,587.60-616,435.20

Finding the Fourth Proportional to 687,002.40, 1,027,587.60 and 616,435.20

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Solution

The fourth proportional to 687,002.40, 1,027,587.60 and 616,435.20 is: 922,036.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,002.40 : 1,027,587.60 = 616,435.20 : x
  2. Step 2: Convert to fraction form
    687,002.40/1,027,587.60 = 616,435.20/x
  3. Step 3: Cross multiply
    687,002.40x = 1,027,587.60 × 616,435.20
  4. Step 4: Simplify right side
    687,002.40x = 633,441,167,723.52
  5. Step 5: Solve for x
    x = 633,441,167,723.52/687,002.40
  6. Step 6: Final answer
    x = 922,036.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.