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Finding the Fourth Proportional to 488,605.90, 731,353.65 and 348,637.90

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Solution

The fourth proportional to 488,605.90, 731,353.65 and 348,637.90 is: 521,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,605.90 : 731,353.65 = 348,637.90 : x
  2. Step 2: Convert to fraction form
    488,605.90/731,353.65 = 348,637.90/x
  3. Step 3: Cross multiply
    488,605.90x = 731,353.65 × 348,637.90
  4. Step 4: Simplify right side
    488,605.90x = 254,977,600,693.34
  5. Step 5: Solve for x
    x = 254,977,600,693.34/488,605.90
  6. Step 6: Final answer
    x = 521,847.16

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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.