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Finding the Fourth Proportional to 542,490.88, 748,598.12 and 297,436.40

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Solution

The fourth proportional to 542,490.88, 748,598.12 and 297,436.40 is: 410,440.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,490.88 : 748,598.12 = 297,436.40 : x
  2. Step 2: Convert to fraction form
    542,490.88/748,598.12 = 297,436.40/x
  3. Step 3: Cross multiply
    542,490.88x = 748,598.12 × 297,436.40
  4. Step 4: Simplify right side
    542,490.88x = 222,660,329,859.57
  5. Step 5: Solve for x
    x = 222,660,329,859.57/542,490.88
  6. Step 6: Final answer
    x = 410,440.69

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.