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Finding the Fourth Proportional to 415,046.40, 622,569.60 and 345,062.40

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Solution

The fourth proportional to 415,046.40, 622,569.60 and 345,062.40 is: 517,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,046.40 : 622,569.60 = 345,062.40 : x
  2. Step 2: Convert to fraction form
    415,046.40/622,569.60 = 345,062.40/x
  3. Step 3: Cross multiply
    415,046.40x = 622,569.60 × 345,062.40
  4. Step 4: Simplify right side
    415,046.40x = 214,825,360,343.04
  5. Step 5: Solve for x
    x = 214,825,360,343.04/415,046.40
  6. Step 6: Final answer
    x = 517,593.60

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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.