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Finding the Fourth Proportional to 642,242.93, 964,841.22 and 453,139.11

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Solution

The fourth proportional to 642,242.93, 964,841.22 and 453,139.11 is: 680,750.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,242.93 : 964,841.22 = 453,139.11 : x
  2. Step 2: Convert to fraction form
    642,242.93/964,841.22 = 453,139.11/x
  3. Step 3: Cross multiply
    642,242.93x = 964,841.22 × 453,139.11
  4. Step 4: Simplify right side
    642,242.93x = 437,207,291,722.11
  5. Step 5: Solve for x
    x = 437,207,291,722.11/642,242.93
  6. Step 6: Final answer
    x = 680,750.65

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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.