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Finding the Fourth Proportional to 610,776.70, 842,872.53 and 356,177.10

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Solution

The fourth proportional to 610,776.70, 842,872.53 and 356,177.10 is: 491,524.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,776.70 : 842,872.53 = 356,177.10 : x
  2. Step 2: Convert to fraction form
    610,776.70/842,872.53 = 356,177.10/x
  3. Step 3: Cross multiply
    610,776.70x = 842,872.53 × 356,177.10
  4. Step 4: Simplify right side
    610,776.70x = 300,211,893,160.34
  5. Step 5: Solve for x
    x = 300,211,893,160.34/610,776.70
  6. Step 6: Final answer
    x = 491,524.79

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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.