Home / 448,861.60-618,868.74-287,451.28

Finding the Fourth Proportional to 448,861.60, 618,868.74 and 287,451.28

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Solution

The fourth proportional to 448,861.60, 618,868.74 and 287,451.28 is: 396,323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,861.60 : 618,868.74 = 287,451.28 : x
  2. Step 2: Convert to fraction form
    448,861.60/618,868.74 = 287,451.28/x
  3. Step 3: Cross multiply
    448,861.60x = 618,868.74 × 287,451.28
  4. Step 4: Simplify right side
    448,861.60x = 177,894,609,917.82
  5. Step 5: Solve for x
    x = 177,894,609,917.82/448,861.60
  6. Step 6: Final answer
    x = 396,323.97

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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.