Home / 1,425,728.72-1,967,430.42-813,857.15

Finding the Fourth Proportional to 1,425,728.72, 1,967,430.42 and 813,857.15

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Solution

The fourth proportional to 1,425,728.72, 1,967,430.42 and 813,857.15 is: 1,123,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,728.72 : 1,967,430.42 = 813,857.15 : x
  2. Step 2: Convert to fraction form
    1,425,728.72/1,967,430.42 = 813,857.15/x
  3. Step 3: Cross multiply
    1,425,728.72x = 1,967,430.42 × 813,857.15
  4. Step 4: Simplify right side
    1,425,728.72x = 1,601,207,304,607.35
  5. Step 5: Solve for x
    x = 1,601,207,304,607.35/1,425,728.72
  6. Step 6: Final answer
    x = 1,123,079.93

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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.