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Finding the Fourth Proportional to 911,831.56, 1,368,141 and 491,023.60

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Solution

The fourth proportional to 911,831.56, 1,368,141 and 491,023.60 is: 736,747.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,831.56 : 1,368,141 = 491,023.60 : x
  2. Step 2: Convert to fraction form
    911,831.56/1,368,141 = 491,023.60/x
  3. Step 3: Cross multiply
    911,831.56x = 1,368,141 × 491,023.60
  4. Step 4: Simplify right side
    911,831.56x = 671,789,519,127.60
  5. Step 5: Solve for x
    x = 671,789,519,127.60/911,831.56
  6. Step 6: Final answer
    x = 736,747.39

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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.