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Finding the Fourth Proportional to 487,559.20, 732,213.60 and 471,812.80

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Solution

The fourth proportional to 487,559.20, 732,213.60 and 471,812.80 is: 708,565.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,559.20 : 732,213.60 = 471,812.80 : x
  2. Step 2: Convert to fraction form
    487,559.20/732,213.60 = 471,812.80/x
  3. Step 3: Cross multiply
    487,559.20x = 732,213.60 × 471,812.80
  4. Step 4: Simplify right side
    487,559.20x = 345,467,748,814.08
  5. Step 5: Solve for x
    x = 345,467,748,814.08/487,559.20
  6. Step 6: Final answer
    x = 708,565.75

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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.