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Finding the Fourth Proportional to 638,364.60, 957,546.90 and 372,425.40

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Solution

The fourth proportional to 638,364.60, 957,546.90 and 372,425.40 is: 558,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,364.60 : 957,546.90 = 372,425.40 : x
  2. Step 2: Convert to fraction form
    638,364.60/957,546.90 = 372,425.40/x
  3. Step 3: Cross multiply
    638,364.60x = 957,546.90 × 372,425.40
  4. Step 4: Simplify right side
    638,364.60x = 356,614,787,251.26
  5. Step 5: Solve for x
    x = 356,614,787,251.26/638,364.60
  6. Step 6: Final answer
    x = 558,638.10

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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.