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Finding the Fourth Proportional to 911,695.67, 1,367,597.03 and 343,081.61

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Solution

The fourth proportional to 911,695.67, 1,367,597.03 and 343,081.61 is: 514,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,695.67 : 1,367,597.03 = 343,081.61 : x
  2. Step 2: Convert to fraction form
    911,695.67/1,367,597.03 = 343,081.61/x
  3. Step 3: Cross multiply
    911,695.67x = 1,367,597.03 × 343,081.61
  4. Step 4: Simplify right side
    911,695.67x = 469,197,390,883.62
  5. Step 5: Solve for x
    x = 469,197,390,883.62/911,695.67
  6. Step 6: Final answer
    x = 514,642.56

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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.