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Finding the Fourth Proportional to 621,363.48, 932,035.69 and 279,565.48

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Solution

The fourth proportional to 621,363.48, 932,035.69 and 279,565.48 is: 419,343.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,363.48 : 932,035.69 = 279,565.48 : x
  2. Step 2: Convert to fraction form
    621,363.48/932,035.69 = 279,565.48/x
  3. Step 3: Cross multiply
    621,363.48x = 932,035.69 × 279,565.48
  4. Step 4: Simplify right side
    621,363.48x = 260,565,005,051.98
  5. Step 5: Solve for x
    x = 260,565,005,051.98/621,363.48
  6. Step 6: Final answer
    x = 419,343.93

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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.