Home / 1,313,057.60-1,812,230.88-991,131.20

Finding the Fourth Proportional to 1,313,057.60, 1,812,230.88 and 991,131.20

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Solution

The fourth proportional to 1,313,057.60, 1,812,230.88 and 991,131.20 is: 1,367,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,057.60 : 1,812,230.88 = 991,131.20 : x
  2. Step 2: Convert to fraction form
    1,313,057.60/1,812,230.88 = 991,131.20/x
  3. Step 3: Cross multiply
    1,313,057.60x = 1,812,230.88 × 991,131.20
  4. Step 4: Simplify right side
    1,313,057.60x = 1,796,158,566,771.46
  5. Step 5: Solve for x
    x = 1,796,158,566,771.46/1,313,057.60
  6. Step 6: Final answer
    x = 1,367,920.62

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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.