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Finding the Fourth Proportional to 861,717.72, 1,293,167.02 and 300,752.22

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Solution

The fourth proportional to 861,717.72, 1,293,167.02 and 300,752.22 is: 451,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,717.72 : 1,293,167.02 = 300,752.22 : x
  2. Step 2: Convert to fraction form
    861,717.72/1,293,167.02 = 300,752.22/x
  3. Step 3: Cross multiply
    861,717.72x = 1,293,167.02 × 300,752.22
  4. Step 4: Simplify right side
    861,717.72x = 388,922,852,095.78
  5. Step 5: Solve for x
    x = 388,922,852,095.78/861,717.72
  6. Step 6: Final answer
    x = 451,334.40

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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.