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Finding the Fourth Proportional to 488,139.90, 731,072.61 and 474,686.21

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Solution

The fourth proportional to 488,139.90, 731,072.61 and 474,686.21 is: 710,923.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,139.90 : 731,072.61 = 474,686.21 : x
  2. Step 2: Convert to fraction form
    488,139.90/731,072.61 = 474,686.21/x
  3. Step 3: Cross multiply
    488,139.90x = 731,072.61 × 474,686.21
  4. Step 4: Simplify right side
    488,139.90x = 347,030,082,820.35
  5. Step 5: Solve for x
    x = 347,030,082,820.35/488,139.90
  6. Step 6: Final answer
    x = 710,923.41

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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.