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Finding the Fourth Proportional to 510,114.20, 764,249.70 and 436,386.20

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Solution

The fourth proportional to 510,114.20, 764,249.70 and 436,386.20 is: 653,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,114.20 : 764,249.70 = 436,386.20 : x
  2. Step 2: Convert to fraction form
    510,114.20/764,249.70 = 436,386.20/x
  3. Step 3: Cross multiply
    510,114.20x = 764,249.70 × 436,386.20
  4. Step 4: Simplify right side
    510,114.20x = 333,508,022,434.14
  5. Step 5: Solve for x
    x = 333,508,022,434.14/510,114.20
  6. Step 6: Final answer
    x = 653,790.90

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Double scale
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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.