Home / 656,255.25-905,632.85-354,449.25

Finding the Fourth Proportional to 656,255.25, 905,632.85 and 354,449.25

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Solution

The fourth proportional to 656,255.25, 905,632.85 and 354,449.25 is: 489,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,255.25 : 905,632.85 = 354,449.25 : x
  2. Step 2: Convert to fraction form
    656,255.25/905,632.85 = 354,449.25/x
  3. Step 3: Cross multiply
    656,255.25x = 905,632.85 × 354,449.25
  4. Step 4: Simplify right side
    656,255.25x = 321,000,885,343.99
  5. Step 5: Solve for x
    x = 321,000,885,343.99/656,255.25
  6. Step 6: Final answer
    x = 489,140.29

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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.