Home / 1,373,920.80-2,059,921.20-812,666.40

Finding the Fourth Proportional to 1,373,920.80, 2,059,921.20 and 812,666.40

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Solution

The fourth proportional to 1,373,920.80, 2,059,921.20 and 812,666.40 is: 1,218,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373,920.80 : 2,059,921.20 = 812,666.40 : x
  2. Step 2: Convert to fraction form
    1,373,920.80/2,059,921.20 = 812,666.40/x
  3. Step 3: Cross multiply
    1,373,920.80x = 2,059,921.20 × 812,666.40
  4. Step 4: Simplify right side
    1,373,920.80x = 1,674,028,745,887.68
  5. Step 5: Solve for x
    x = 1,674,028,745,887.68/1,373,920.80
  6. Step 6: Final answer
    x = 1,218,431.77

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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.