Home / 917,728.17-1,266,423.82-509,856.31

Finding the Fourth Proportional to 917,728.17, 1,266,423.82 and 509,856.31

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Solution

The fourth proportional to 917,728.17, 1,266,423.82 and 509,856.31 is: 703,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,728.17 : 1,266,423.82 = 509,856.31 : x
  2. Step 2: Convert to fraction form
    917,728.17/1,266,423.82 = 509,856.31/x
  3. Step 3: Cross multiply
    917,728.17x = 1,266,423.82 × 509,856.31
  4. Step 4: Simplify right side
    917,728.17x = 645,694,175,761.30
  5. Step 5: Solve for x
    x = 645,694,175,761.30/917,728.17
  6. Step 6: Final answer
    x = 703,578.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.