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Finding the Fourth Proportional to 522,597.20, 721,182.96 and 290,059.78

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Solution

The fourth proportional to 522,597.20, 721,182.96 and 290,059.78 is: 400,281.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,597.20 : 721,182.96 = 290,059.78 : x
  2. Step 2: Convert to fraction form
    522,597.20/721,182.96 = 290,059.78/x
  3. Step 3: Cross multiply
    522,597.20x = 721,182.96 × 290,059.78
  4. Step 4: Simplify right side
    522,597.20x = 209,186,167,111.43
  5. Step 5: Solve for x
    x = 209,186,167,111.43/522,597.20
  6. Step 6: Final answer
    x = 400,281.84

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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.