Home / 603,742.20-905,613.30-288,814.20

Finding the Fourth Proportional to 603,742.20, 905,613.30 and 288,814.20

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Solution

The fourth proportional to 603,742.20, 905,613.30 and 288,814.20 is: 433,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,742.20 : 905,613.30 = 288,814.20 : x
  2. Step 2: Convert to fraction form
    603,742.20/905,613.30 = 288,814.20/x
  3. Step 3: Cross multiply
    603,742.20x = 905,613.30 × 288,814.20
  4. Step 4: Simplify right side
    603,742.20x = 261,553,980,748.86
  5. Step 5: Solve for x
    x = 261,553,980,748.86/603,742.20
  6. Step 6: Final answer
    x = 433,221.30

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Half scale
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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.