Home / 603,742.20-905,613.30-426,595.20

Finding the Fourth Proportional to 603,742.20, 905,613.30 and 426,595.20

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Solution

The fourth proportional to 603,742.20, 905,613.30 and 426,595.20 is: 639,892.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,742.20 : 905,613.30 = 426,595.20 : x
  2. Step 2: Convert to fraction form
    603,742.20/905,613.30 = 426,595.20/x
  3. Step 3: Cross multiply
    603,742.20x = 905,613.30 × 426,595.20
  4. Step 4: Simplify right side
    603,742.20x = 386,330,286,836.16
  5. Step 5: Solve for x
    x = 386,330,286,836.16/603,742.20
  6. Step 6: Final answer
    x = 639,892.80

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Double scale
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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.