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Finding the Fourth Proportional to 577,385.70, 864,438.30 and 545,965.80

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Solution

The fourth proportional to 577,385.70, 864,438.30 and 545,965.80 is: 817,397.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,385.70 : 864,438.30 = 545,965.80 : x
  2. Step 2: Convert to fraction form
    577,385.70/864,438.30 = 545,965.80/x
  3. Step 3: Cross multiply
    577,385.70x = 864,438.30 × 545,965.80
  4. Step 4: Simplify right side
    577,385.70x = 471,953,748,010.14
  5. Step 5: Solve for x
    x = 471,953,748,010.14/577,385.70
  6. Step 6: Final answer
    x = 817,397.71

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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.