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Finding the Fourth Proportional to 661,970.88, 913,517.28 and 360,169.92

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Solution

The fourth proportional to 661,970.88, 913,517.28 and 360,169.92 is: 497,033.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,970.88 : 913,517.28 = 360,169.92 : x
  2. Step 2: Convert to fraction form
    661,970.88/913,517.28 = 360,169.92/x
  3. Step 3: Cross multiply
    661,970.88x = 913,517.28 × 360,169.92
  4. Step 4: Simplify right side
    661,970.88x = 329,021,445,656.22
  5. Step 5: Solve for x
    x = 329,021,445,656.22/661,970.88
  6. Step 6: Final answer
    x = 497,033.11

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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.