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Finding the Fourth Proportional to 638,432.30, 957,211.05 and 301,634.30

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Solution

The fourth proportional to 638,432.30, 957,211.05 and 301,634.30 is: 452,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,432.30 : 957,211.05 = 301,634.30 : x
  2. Step 2: Convert to fraction form
    638,432.30/957,211.05 = 301,634.30/x
  3. Step 3: Cross multiply
    638,432.30x = 957,211.05 × 301,634.30
  4. Step 4: Simplify right side
    638,432.30x = 288,727,685,019.02
  5. Step 5: Solve for x
    x = 288,727,685,019.02/638,432.30
  6. Step 6: Final answer
    x = 452,244.80

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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.