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Finding the Fourth Proportional to 543,615.60, 813,810.60 and 403,993.20

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Solution

The fourth proportional to 543,615.60, 813,810.60 and 403,993.20 is: 604,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,615.60 : 813,810.60 = 403,993.20 : x
  2. Step 2: Convert to fraction form
    543,615.60/813,810.60 = 403,993.20/x
  3. Step 3: Cross multiply
    543,615.60x = 813,810.60 × 403,993.20
  4. Step 4: Simplify right side
    543,615.60x = 328,773,948,487.92
  5. Step 5: Solve for x
    x = 328,773,948,487.92/543,615.60
  6. Step 6: Final answer
    x = 604,791.23

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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.