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Finding the Fourth Proportional to 500,687.80, 750,063.90 and 278,397.88

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Solution

The fourth proportional to 500,687.80, 750,063.90 and 278,397.88 is: 417,058.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,687.80 : 750,063.90 = 278,397.88 : x
  2. Step 2: Convert to fraction form
    500,687.80/750,063.90 = 278,397.88/x
  3. Step 3: Cross multiply
    500,687.80x = 750,063.90 × 278,397.88
  4. Step 4: Simplify right side
    500,687.80x = 208,816,199,624.53
  5. Step 5: Solve for x
    x = 208,816,199,624.53/500,687.80
  6. Step 6: Final answer
    x = 417,058.69

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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.