Home / 1,140,872.10-1,573,909.17-687,911.46

Finding the Fourth Proportional to 1,140,872.10, 1,573,909.17 and 687,911.46

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Solution

The fourth proportional to 1,140,872.10, 1,573,909.17 and 687,911.46 is: 949,019.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,872.10 : 1,573,909.17 = 687,911.46 : x
  2. Step 2: Convert to fraction form
    1,140,872.10/1,573,909.17 = 687,911.46/x
  3. Step 3: Cross multiply
    1,140,872.10x = 1,573,909.17 × 687,911.46
  4. Step 4: Simplify right side
    1,140,872.10x = 1,082,710,155,042.09
  5. Step 5: Solve for x
    x = 1,082,710,155,042.09/1,140,872.10
  6. Step 6: Final answer
    x = 949,019.75

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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.