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Finding the Fourth Proportional to 638,375.68, 880,952.56 and 347,987.20

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Solution

The fourth proportional to 638,375.68, 880,952.56 and 347,987.20 is: 480,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,375.68 : 880,952.56 = 347,987.20 : x
  2. Step 2: Convert to fraction form
    638,375.68/880,952.56 = 347,987.20/x
  3. Step 3: Cross multiply
    638,375.68x = 880,952.56 × 347,987.20
  4. Step 4: Simplify right side
    638,375.68x = 306,560,214,687.23
  5. Step 5: Solve for x
    x = 306,560,214,687.23/638,375.68
  6. Step 6: Final answer
    x = 480,219.13

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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.