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Finding the Fourth Proportional to 917,825.40, 1,375,863.30 and 715,309.20

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Solution

The fourth proportional to 917,825.40, 1,375,863.30 and 715,309.20 is: 1,072,282.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,825.40 : 1,375,863.30 = 715,309.20 : x
  2. Step 2: Convert to fraction form
    917,825.40/1,375,863.30 = 715,309.20/x
  3. Step 3: Cross multiply
    917,825.40x = 1,375,863.30 × 715,309.20
  4. Step 4: Simplify right side
    917,825.40x = 984,167,676,432.36
  5. Step 5: Solve for x
    x = 984,167,676,432.36/917,825.40
  6. Step 6: Final answer
    x = 1,072,282.02

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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.