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Finding the Fourth Proportional to 618,201.70, 927,302.55 and 478,060.90

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Solution

The fourth proportional to 618,201.70, 927,302.55 and 478,060.90 is: 717,091.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,201.70 : 927,302.55 = 478,060.90 : x
  2. Step 2: Convert to fraction form
    618,201.70/927,302.55 = 478,060.90/x
  3. Step 3: Cross multiply
    618,201.70x = 927,302.55 × 478,060.90
  4. Step 4: Simplify right side
    618,201.70x = 443,307,091,625.30
  5. Step 5: Solve for x
    x = 443,307,091,625.30/618,201.70
  6. Step 6: Final answer
    x = 717,091.35

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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.