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Finding the Fourth Proportional to 665,669.61, 918,632.07 and 363,863.61

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Solution

The fourth proportional to 665,669.61, 918,632.07 and 363,863.61 is: 502,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,669.61 : 918,632.07 = 363,863.61 : x
  2. Step 2: Convert to fraction form
    665,669.61/918,632.07 = 363,863.61/x
  3. Step 3: Cross multiply
    665,669.61x = 918,632.07 × 363,863.61
  4. Step 4: Simplify right side
    665,669.61x = 334,256,781,251.97
  5. Step 5: Solve for x
    x = 334,256,781,251.97/665,669.61
  6. Step 6: Final answer
    x = 502,136.16

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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.