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Finding the Fourth Proportional to 448,424.01, 618,475.20 and 287,294.15

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Solution

The fourth proportional to 448,424.01, 618,475.20 and 287,294.15 is: 396,241.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,424.01 : 618,475.20 = 287,294.15 : x
  2. Step 2: Convert to fraction form
    448,424.01/618,475.20 = 287,294.15/x
  3. Step 3: Cross multiply
    448,424.01x = 618,475.20 × 287,294.15
  4. Step 4: Simplify right side
    448,424.01x = 177,684,303,787.70
  5. Step 5: Solve for x
    x = 177,684,303,787.70/448,424.01
  6. Step 6: Final answer
    x = 396,241.73

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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.