Home / 1,109,906.60-1,664,859.90-991,711.40

Finding the Fourth Proportional to 1,109,906.60, 1,664,859.90 and 991,711.40

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Solution

The fourth proportional to 1,109,906.60, 1,664,859.90 and 991,711.40 is: 1,487,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,906.60 : 1,664,859.90 = 991,711.40 : x
  2. Step 2: Convert to fraction form
    1,109,906.60/1,664,859.90 = 991,711.40/x
  3. Step 3: Cross multiply
    1,109,906.60x = 1,664,859.90 × 991,711.40
  4. Step 4: Simplify right side
    1,109,906.60x = 1,651,060,542,232.86
  5. Step 5: Solve for x
    x = 1,651,060,542,232.86/1,109,906.60
  6. Step 6: Final answer
    x = 1,487,567.10

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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.