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Finding the Fourth Proportional to 448,473.97, 618,543.70 and 287,344.72

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Solution

The fourth proportional to 448,473.97, 618,543.70 and 287,344.72 is: 396,311.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,473.97 : 618,543.70 = 287,344.72 : x
  2. Step 2: Convert to fraction form
    448,473.97/618,543.70 = 287,344.72/x
  3. Step 3: Cross multiply
    448,473.97x = 618,543.70 × 287,344.72
  4. Step 4: Simplify right side
    448,473.97x = 177,735,266,284.26
  5. Step 5: Solve for x
    x = 177,735,266,284.26/448,473.97
  6. Step 6: Final answer
    x = 396,311.22

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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.