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Finding the Fourth Proportional to 911,201.40, 1,366,802.10 and 437,772.60

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Solution

The fourth proportional to 911,201.40, 1,366,802.10 and 437,772.60 is: 656,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,201.40 : 1,366,802.10 = 437,772.60 : x
  2. Step 2: Convert to fraction form
    911,201.40/1,366,802.10 = 437,772.60/x
  3. Step 3: Cross multiply
    911,201.40x = 1,366,802.10 × 437,772.60
  4. Step 4: Simplify right side
    911,201.40x = 598,348,509,002.46
  5. Step 5: Solve for x
    x = 598,348,509,002.46/911,201.40
  6. Step 6: Final answer
    x = 656,658.90

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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.