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Finding the Fourth Proportional to 478,652.56, 660,510.85 and 263,780.62

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Solution

The fourth proportional to 478,652.56, 660,510.85 and 263,780.62 is: 364,000.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,652.56 : 660,510.85 = 263,780.62 : x
  2. Step 2: Convert to fraction form
    478,652.56/660,510.85 = 263,780.62/x
  3. Step 3: Cross multiply
    478,652.56x = 660,510.85 × 263,780.62
  4. Step 4: Simplify right side
    478,652.56x = 174,229,956,908.27
  5. Step 5: Solve for x
    x = 174,229,956,908.27/478,652.56
  6. Step 6: Final answer
    x = 364,000.89

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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.