Home / 1,391,713.17-2,084,025.89-916,959.21

Finding the Fourth Proportional to 1,391,713.17, 2,084,025.89 and 916,959.21

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Solution

The fourth proportional to 1,391,713.17, 2,084,025.89 and 916,959.21 is: 1,373,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,713.17 : 2,084,025.89 = 916,959.21 : x
  2. Step 2: Convert to fraction form
    1,391,713.17/2,084,025.89 = 916,959.21/x
  3. Step 3: Cross multiply
    1,391,713.17x = 2,084,025.89 × 916,959.21
  4. Step 4: Simplify right side
    1,391,713.17x = 1,910,966,728,191.25
  5. Step 5: Solve for x
    x = 1,910,966,728,191.25/1,391,713.17
  6. Step 6: Final answer
    x = 1,373,103.87

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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.