Home / 489,116.15-733,674.23-431,379.35

Finding the Fourth Proportional to 489,116.15, 733,674.23 and 431,379.35

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Solution

The fourth proportional to 489,116.15, 733,674.23 and 431,379.35 is: 647,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,116.15 : 733,674.23 = 431,379.35 : x
  2. Step 2: Convert to fraction form
    489,116.15/733,674.23 = 431,379.35/x
  3. Step 3: Cross multiply
    489,116.15x = 733,674.23 × 431,379.35
  4. Step 4: Simplify right side
    489,116.15x = 316,491,912,449.15
  5. Step 5: Solve for x
    x = 316,491,912,449.15/489,116.15
  6. Step 6: Final answer
    x = 647,069.03

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Similar ratio
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1.5x scale

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.