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Finding the Fourth Proportional to 661,487.40, 992,360.70 and 282,407.40

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Solution

The fourth proportional to 661,487.40, 992,360.70 and 282,407.40 is: 423,666.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,487.40 : 992,360.70 = 282,407.40 : x
  2. Step 2: Convert to fraction form
    661,487.40/992,360.70 = 282,407.40/x
  3. Step 3: Cross multiply
    661,487.40x = 992,360.70 × 282,407.40
  4. Step 4: Simplify right side
    661,487.40x = 280,250,005,149.18
  5. Step 5: Solve for x
    x = 280,250,005,149.18/661,487.40
  6. Step 6: Final answer
    x = 423,666.43

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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.