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Finding the Fourth Proportional to 811,499.52, 1,217,771.52 and 437,780.48

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Solution

The fourth proportional to 811,499.52, 1,217,771.52 and 437,780.48 is: 656,952.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,499.52 : 1,217,771.52 = 437,780.48 : x
  2. Step 2: Convert to fraction form
    811,499.52/1,217,771.52 = 437,780.48/x
  3. Step 3: Cross multiply
    811,499.52x = 1,217,771.52 × 437,780.48
  4. Step 4: Simplify right side
    811,499.52x = 533,116,600,555.93
  5. Step 5: Solve for x
    x = 533,116,600,555.93/811,499.52
  6. Step 6: Final answer
    x = 656,952.45

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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.