Home / 415,128.20-622,692.30-314,744.90

Finding the Fourth Proportional to 415,128.20, 622,692.30 and 314,744.90

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Solution

The fourth proportional to 415,128.20, 622,692.30 and 314,744.90 is: 472,117.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,128.20 : 622,692.30 = 314,744.90 : x
  2. Step 2: Convert to fraction form
    415,128.20/622,692.30 = 314,744.90/x
  3. Step 3: Cross multiply
    415,128.20x = 622,692.30 × 314,744.90
  4. Step 4: Simplify right side
    415,128.20x = 195,989,225,694.27
  5. Step 5: Solve for x
    x = 195,989,225,694.27/415,128.20
  6. Step 6: Final answer
    x = 472,117.35

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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.