Home / 1,377,956.70-2,066,999.85-431,358.30

Finding the Fourth Proportional to 1,377,956.70, 2,066,999.85 and 431,358.30

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Solution

The fourth proportional to 1,377,956.70, 2,066,999.85 and 431,358.30 is: 647,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,956.70 : 2,066,999.85 = 431,358.30 : x
  2. Step 2: Convert to fraction form
    1,377,956.70/2,066,999.85 = 431,358.30/x
  3. Step 3: Cross multiply
    1,377,956.70x = 2,066,999.85 × 431,358.30
  4. Step 4: Simplify right side
    1,377,956.70x = 891,617,541,396.26
  5. Step 5: Solve for x
    x = 891,617,541,396.26/1,377,956.70
  6. Step 6: Final answer
    x = 647,057.74

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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.