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Finding the Fourth Proportional to 638,154.40, 957,231.60 and 488,855.20

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Solution

The fourth proportional to 638,154.40, 957,231.60 and 488,855.20 is: 733,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,154.40 : 957,231.60 = 488,855.20 : x
  2. Step 2: Convert to fraction form
    638,154.40/957,231.60 = 488,855.20/x
  3. Step 3: Cross multiply
    638,154.40x = 957,231.60 × 488,855.20
  4. Step 4: Simplify right side
    638,154.40x = 467,947,645,264.32
  5. Step 5: Solve for x
    x = 467,947,645,264.32/638,154.40
  6. Step 6: Final answer
    x = 733,282.80

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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.