Home / 1,215,008.40-1,822,512.60-764,267.70

Finding the Fourth Proportional to 1,215,008.40, 1,822,512.60 and 764,267.70

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Solution

The fourth proportional to 1,215,008.40, 1,822,512.60 and 764,267.70 is: 1,146,401.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,008.40 : 1,822,512.60 = 764,267.70 : x
  2. Step 2: Convert to fraction form
    1,215,008.40/1,822,512.60 = 764,267.70/x
  3. Step 3: Cross multiply
    1,215,008.40x = 1,822,512.60 × 764,267.70
  4. Step 4: Simplify right side
    1,215,008.40x = 1,392,887,513,023.02
  5. Step 5: Solve for x
    x = 1,392,887,513,023.02/1,215,008.40
  6. Step 6: Final answer
    x = 1,146,401.55

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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.