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Finding the Fourth Proportional to 680,248.72, 940,037.92 and 510,187.60

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Solution

The fourth proportional to 680,248.72, 940,037.92 and 510,187.60 is: 705,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,248.72 : 940,037.92 = 510,187.60 : x
  2. Step 2: Convert to fraction form
    680,248.72/940,037.92 = 510,187.60/x
  3. Step 3: Cross multiply
    680,248.72x = 940,037.92 × 510,187.60
  4. Step 4: Simplify right side
    680,248.72x = 479,595,690,313.79
  5. Step 5: Solve for x
    x = 479,595,690,313.79/680,248.72
  6. Step 6: Final answer
    x = 705,029.90

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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.