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Finding the Fourth Proportional to 432,997.30, 649,495.95 and 291,279.70

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Solution

The fourth proportional to 432,997.30, 649,495.95 and 291,279.70 is: 436,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,997.30 : 649,495.95 = 291,279.70 : x
  2. Step 2: Convert to fraction form
    432,997.30/649,495.95 = 291,279.70/x
  3. Step 3: Cross multiply
    432,997.30x = 649,495.95 × 291,279.70
  4. Step 4: Simplify right side
    432,997.30x = 189,184,985,467.22
  5. Step 5: Solve for x
    x = 189,184,985,467.22/432,997.30
  6. Step 6: Final answer
    x = 436,919.55

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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.