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Finding the Fourth Proportional to 911,765.54, 1,366,425.78 and 709,605.74

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Solution

The fourth proportional to 911,765.54, 1,366,425.78 and 709,605.74 is: 1,063,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,765.54 : 1,366,425.78 = 709,605.74 : x
  2. Step 2: Convert to fraction form
    911,765.54/1,366,425.78 = 709,605.74/x
  3. Step 3: Cross multiply
    911,765.54x = 1,366,425.78 × 709,605.74
  4. Step 4: Simplify right side
    911,765.54x = 969,623,569,939.85
  5. Step 5: Solve for x
    x = 969,623,569,939.85/911,765.54
  6. Step 6: Final answer
    x = 1,063,457.14

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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.