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Finding the Fourth Proportional to 512,934.60, 769,401.90 and 291,750.60

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Solution

The fourth proportional to 512,934.60, 769,401.90 and 291,750.60 is: 437,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,934.60 : 769,401.90 = 291,750.60 : x
  2. Step 2: Convert to fraction form
    512,934.60/769,401.90 = 291,750.60/x
  3. Step 3: Cross multiply
    512,934.60x = 769,401.90 × 291,750.60
  4. Step 4: Simplify right side
    512,934.60x = 224,473,465,966.14
  5. Step 5: Solve for x
    x = 224,473,465,966.14/512,934.60
  6. Step 6: Final answer
    x = 437,625.90

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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.