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Finding the Fourth Proportional to 543,730.60, 813,983.10 and 404,108.20

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Solution

The fourth proportional to 543,730.60, 813,983.10 and 404,108.20 is: 604,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,730.60 : 813,983.10 = 404,108.20 : x
  2. Step 2: Convert to fraction form
    543,730.60/813,983.10 = 404,108.20/x
  3. Step 3: Cross multiply
    543,730.60x = 813,983.10 × 404,108.20
  4. Step 4: Simplify right side
    543,730.60x = 328,937,245,371.42
  5. Step 5: Solve for x
    x = 328,937,245,371.42/543,730.60
  6. Step 6: Final answer
    x = 604,963.64

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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.