Home / 820,312.28-1,131,861.91-471,385.22

Finding the Fourth Proportional to 820,312.28, 1,131,861.91 and 471,385.22

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Solution

The fourth proportional to 820,312.28, 1,131,861.91 and 471,385.22 is: 650,414.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,312.28 : 1,131,861.91 = 471,385.22 : x
  2. Step 2: Convert to fraction form
    820,312.28/1,131,861.91 = 471,385.22/x
  3. Step 3: Cross multiply
    820,312.28x = 1,131,861.91 × 471,385.22
  4. Step 4: Simplify right side
    820,312.28x = 533,542,967,438.74
  5. Step 5: Solve for x
    x = 533,542,967,438.74/820,312.28
  6. Step 6: Final answer
    x = 650,414.46

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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.