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Finding the Fourth Proportional to 911,818.54, 1,368,121.47 and 491,010.58

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Solution

The fourth proportional to 911,818.54, 1,368,121.47 and 491,010.58 is: 736,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,818.54 : 1,368,121.47 = 491,010.58 : x
  2. Step 2: Convert to fraction form
    911,818.54/1,368,121.47 = 491,010.58/x
  3. Step 3: Cross multiply
    911,818.54x = 1,368,121.47 × 491,010.58
  4. Step 4: Simplify right side
    911,818.54x = 671,762,116,495.15
  5. Step 5: Solve for x
    x = 671,762,116,495.15/911,818.54
  6. Step 6: Final answer
    x = 736,727.85

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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.