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Finding the Fourth Proportional to 478,652.43, 660,510.68 and 263,780.49

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Solution

The fourth proportional to 478,652.43, 660,510.68 and 263,780.49 is: 364,000.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,652.43 : 660,510.68 = 263,780.49 : x
  2. Step 2: Convert to fraction form
    478,652.43/660,510.68 = 263,780.49/x
  3. Step 3: Cross multiply
    478,652.43x = 660,510.68 × 263,780.49
  4. Step 4: Simplify right side
    478,652.43x = 174,229,829,501.73
  5. Step 5: Solve for x
    x = 174,229,829,501.73/478,652.43
  6. Step 6: Final answer
    x = 364,000.72

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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.