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Finding the Fourth Proportional to 610,672.78, 842,729.16 and 356,073.18

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Solution

The fourth proportional to 610,672.78, 842,729.16 and 356,073.18 is: 491,381.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,672.78 : 842,729.16 = 356,073.18 : x
  2. Step 2: Convert to fraction form
    610,672.78/842,729.16 = 356,073.18/x
  3. Step 3: Cross multiply
    610,672.78x = 842,729.16 × 356,073.18
  4. Step 4: Simplify right side
    610,672.78x = 300,073,251,879.93
  5. Step 5: Solve for x
    x = 300,073,251,879.93/610,672.78
  6. Step 6: Final answer
    x = 491,381.41

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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.