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Finding the Fourth Proportional to 576,034.20, 864,051.30 and 520,921.80

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Solution

The fourth proportional to 576,034.20, 864,051.30 and 520,921.80 is: 781,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,034.20 : 864,051.30 = 520,921.80 : x
  2. Step 2: Convert to fraction form
    576,034.20/864,051.30 = 520,921.80/x
  3. Step 3: Cross multiply
    576,034.20x = 864,051.30 × 520,921.80
  4. Step 4: Simplify right side
    576,034.20x = 450,103,158,488.34
  5. Step 5: Solve for x
    x = 450,103,158,488.34/576,034.20
  6. Step 6: Final answer
    x = 781,382.70

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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.