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Finding the Fourth Proportional to 712,525.52, 983,296.32 and 390,229.76

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Solution

The fourth proportional to 712,525.52, 983,296.32 and 390,229.76 is: 538,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,525.52 : 983,296.32 = 390,229.76 : x
  2. Step 2: Convert to fraction form
    712,525.52/983,296.32 = 390,229.76/x
  3. Step 3: Cross multiply
    712,525.52x = 983,296.32 × 390,229.76
  4. Step 4: Simplify right side
    712,525.52x = 383,711,486,962.48
  5. Step 5: Solve for x
    x = 383,711,486,962.48/712,525.52
  6. Step 6: Final answer
    x = 538,523.15

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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.