Home / 674,631.20-930,613.20-402,620.96

Finding the Fourth Proportional to 674,631.20, 930,613.20 and 402,620.96

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Solution

The fourth proportional to 674,631.20, 930,613.20 and 402,620.96 is: 555,391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,631.20 : 930,613.20 = 402,620.96 : x
  2. Step 2: Convert to fraction form
    674,631.20/930,613.20 = 402,620.96/x
  3. Step 3: Cross multiply
    674,631.20x = 930,613.20 × 402,620.96
  4. Step 4: Simplify right side
    674,631.20x = 374,684,379,972.67
  5. Step 5: Solve for x
    x = 374,684,379,972.67/674,631.20
  6. Step 6: Final answer
    x = 555,391.42

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1.5x scale

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.