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Finding the Fourth Proportional to 577,385.20, 864,437.55 and 545,965.30

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Solution

The fourth proportional to 577,385.20, 864,437.55 and 545,965.30 is: 817,396.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,385.20 : 864,437.55 = 545,965.30 : x
  2. Step 2: Convert to fraction form
    577,385.20/864,437.55 = 545,965.30/x
  3. Step 3: Cross multiply
    577,385.20x = 864,437.55 × 545,965.30
  4. Step 4: Simplify right side
    577,385.20x = 471,952,906,317.02
  5. Step 5: Solve for x
    x = 471,952,906,317.02/577,385.20
  6. Step 6: Final answer
    x = 817,396.96

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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.