Home / 638,132.64-880,611.75-347,746.80

Finding the Fourth Proportional to 638,132.64, 880,611.75 and 347,746.80

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Solution

The fourth proportional to 638,132.64, 880,611.75 and 347,746.80 is: 479,884.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,132.64 : 880,611.75 = 347,746.80 : x
  2. Step 2: Convert to fraction form
    638,132.64/880,611.75 = 347,746.80/x
  3. Step 3: Cross multiply
    638,132.64x = 880,611.75 × 347,746.80
  4. Step 4: Simplify right side
    638,132.64x = 306,229,918,104.90
  5. Step 5: Solve for x
    x = 306,229,918,104.90/638,132.64
  6. Step 6: Final answer
    x = 479,884.43

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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.