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Finding the Fourth Proportional to 445,502.74, 666,657.78 and 385,737.40

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Solution

The fourth proportional to 445,502.74, 666,657.78 and 385,737.40 is: 577,223.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,502.74 : 666,657.78 = 385,737.40 : x
  2. Step 2: Convert to fraction form
    445,502.74/666,657.78 = 385,737.40/x
  3. Step 3: Cross multiply
    445,502.74x = 666,657.78 × 385,737.40
  4. Step 4: Simplify right side
    445,502.74x = 257,154,838,746.97
  5. Step 5: Solve for x
    x = 257,154,838,746.97/445,502.74
  6. Step 6: Final answer
    x = 577,223.92

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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.