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Finding the Fourth Proportional to 541,328.38, 812,074.56 and 392,690.29

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Solution

The fourth proportional to 541,328.38, 812,074.56 and 392,690.29 is: 589,094.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,328.38 : 812,074.56 = 392,690.29 : x
  2. Step 2: Convert to fraction form
    541,328.38/812,074.56 = 392,690.29/x
  3. Step 3: Cross multiply
    541,328.38x = 812,074.56 × 392,690.29
  4. Step 4: Simplify right side
    541,328.38x = 318,893,794,468.02
  5. Step 5: Solve for x
    x = 318,893,794,468.02/541,328.38
  6. Step 6: Final answer
    x = 589,094.91

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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.