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Finding the Fourth Proportional to 488,013.20, 732,146.01 and 285,780.09

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Solution

The fourth proportional to 488,013.20, 732,146.01 and 285,780.09 is: 428,744.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,013.20 : 732,146.01 = 285,780.09 : x
  2. Step 2: Convert to fraction form
    488,013.20/732,146.01 = 285,780.09/x
  3. Step 3: Cross multiply
    488,013.20x = 732,146.01 × 285,780.09
  4. Step 4: Simplify right side
    488,013.20x = 209,232,754,304.81
  5. Step 5: Solve for x
    x = 209,232,754,304.81/488,013.20
  6. Step 6: Final answer
    x = 428,744.05

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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.