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Finding the Fourth Proportional to 448,445.64, 618,474.24 and 378,935.48

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Solution

The fourth proportional to 448,445.64, 618,474.24 and 378,935.48 is: 522,609.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,445.64 : 618,474.24 = 378,935.48 : x
  2. Step 2: Convert to fraction form
    448,445.64/618,474.24 = 378,935.48/x
  3. Step 3: Cross multiply
    448,445.64x = 618,474.24 × 378,935.48
  4. Step 4: Simplify right side
    448,445.64x = 234,361,833,002.04
  5. Step 5: Solve for x
    x = 234,361,833,002.04/448,445.64
  6. Step 6: Final answer
    x = 522,609.24

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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.