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Finding the Fourth Proportional to 448,078.80, 672,118.20 and 413,864.40

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Solution

The fourth proportional to 448,078.80, 672,118.20 and 413,864.40 is: 620,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,078.80 : 672,118.20 = 413,864.40 : x
  2. Step 2: Convert to fraction form
    448,078.80/672,118.20 = 413,864.40/x
  3. Step 3: Cross multiply
    448,078.80x = 672,118.20 × 413,864.40
  4. Step 4: Simplify right side
    448,078.80x = 278,165,795,572.08
  5. Step 5: Solve for x
    x = 278,165,795,572.08/448,078.80
  6. Step 6: Final answer
    x = 620,796.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.