Home / 1,131,470.20-1,561,428.90-622,172.58

Finding the Fourth Proportional to 1,131,470.20, 1,561,428.90 and 622,172.58

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Solution

The fourth proportional to 1,131,470.20, 1,561,428.90 and 622,172.58 is: 858,598.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,470.20 : 1,561,428.90 = 622,172.58 : x
  2. Step 2: Convert to fraction form
    1,131,470.20/1,561,428.90 = 622,172.58/x
  3. Step 3: Cross multiply
    1,131,470.20x = 1,561,428.90 × 622,172.58
  4. Step 4: Simplify right side
    1,131,470.20x = 971,478,247,199.56
  5. Step 5: Solve for x
    x = 971,478,247,199.56/1,131,470.20
  6. Step 6: Final answer
    x = 858,598.17

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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.