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Finding the Fourth Proportional to 621,630.79, 932,446.43 and 279,674.93

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Solution

The fourth proportional to 621,630.79, 932,446.43 and 279,674.93 is: 419,512.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,630.79 : 932,446.43 = 279,674.93 : x
  2. Step 2: Convert to fraction form
    621,630.79/932,446.43 = 279,674.93/x
  3. Step 3: Cross multiply
    621,630.79x = 932,446.43 × 279,674.93
  4. Step 4: Simplify right side
    621,630.79x = 260,781,888,348.68
  5. Step 5: Solve for x
    x = 260,781,888,348.68/621,630.79
  6. Step 6: Final answer
    x = 419,512.50

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Double scale
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1.5x scale

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.