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Finding the Fourth Proportional to 488,605.80, 731,483.10 and 348,637.80

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Solution

The fourth proportional to 488,605.80, 731,483.10 and 348,637.80 is: 521,939.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,605.80 : 731,483.10 = 348,637.80 : x
  2. Step 2: Convert to fraction form
    488,605.80/731,483.10 = 348,637.80/x
  3. Step 3: Cross multiply
    488,605.80x = 731,483.10 × 348,637.80
  4. Step 4: Simplify right side
    488,605.80x = 255,022,658,721.18
  5. Step 5: Solve for x
    x = 255,022,658,721.18/488,605.80
  6. Step 6: Final answer
    x = 521,939.48

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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.