Home / 687,753.60-1,031,630.40-538,454.40

Finding the Fourth Proportional to 687,753.60, 1,031,630.40 and 538,454.40

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Solution

The fourth proportional to 687,753.60, 1,031,630.40 and 538,454.40 is: 807,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,753.60 : 1,031,630.40 = 538,454.40 : x
  2. Step 2: Convert to fraction form
    687,753.60/1,031,630.40 = 538,454.40/x
  3. Step 3: Cross multiply
    687,753.60x = 1,031,630.40 × 538,454.40
  4. Step 4: Simplify right side
    687,753.60x = 555,485,928,053.76
  5. Step 5: Solve for x
    x = 555,485,928,053.76/687,753.60
  6. Step 6: Final answer
    x = 807,681.60

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1.5x scale

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.