Home / 1,140,872.60-1,573,909.86-687,911.96

Finding the Fourth Proportional to 1,140,872.60, 1,573,909.86 and 687,911.96

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Solution

The fourth proportional to 1,140,872.60, 1,573,909.86 and 687,911.96 is: 949,020.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,872.60 : 1,573,909.86 = 687,911.96 : x
  2. Step 2: Convert to fraction form
    1,140,872.60/1,573,909.86 = 687,911.96/x
  3. Step 3: Cross multiply
    1,140,872.60x = 1,573,909.86 × 687,911.96
  4. Step 4: Simplify right side
    1,140,872.60x = 1,082,711,416,655.93
  5. Step 5: Solve for x
    x = 1,082,711,416,655.93/1,140,872.60
  6. Step 6: Final answer
    x = 949,020.44

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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.