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Finding the Fourth Proportional to 478,494.72, 660,337.62 and 274,582.98

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Solution

The fourth proportional to 478,494.72, 660,337.62 and 274,582.98 is: 378,933.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,494.72 : 660,337.62 = 274,582.98 : x
  2. Step 2: Convert to fraction form
    478,494.72/660,337.62 = 274,582.98/x
  3. Step 3: Cross multiply
    478,494.72x = 660,337.62 × 274,582.98
  4. Step 4: Simplify right side
    478,494.72x = 181,317,471,505.71
  5. Step 5: Solve for x
    x = 181,317,471,505.71/478,494.72
  6. Step 6: Final answer
    x = 378,933.07

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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.