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Finding the Fourth Proportional to 613,453.20, 846,544.68 and 345,129.36

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Solution

The fourth proportional to 613,453.20, 846,544.68 and 345,129.36 is: 476,266.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,453.20 : 846,544.68 = 345,129.36 : x
  2. Step 2: Convert to fraction form
    613,453.20/846,544.68 = 345,129.36/x
  3. Step 3: Cross multiply
    613,453.20x = 846,544.68 × 345,129.36
  4. Step 4: Simplify right side
    613,453.20x = 292,167,423,619.81
  5. Step 5: Solve for x
    x = 292,167,423,619.81/613,453.20
  6. Step 6: Final answer
    x = 476,266.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.