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Finding the Fourth Proportional to 448,079.80, 672,119.70 and 413,865.40

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Solution

The fourth proportional to 448,079.80, 672,119.70 and 413,865.40 is: 620,798.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,079.80 : 672,119.70 = 413,865.40 : x
  2. Step 2: Convert to fraction form
    448,079.80/672,119.70 = 413,865.40/x
  3. Step 3: Cross multiply
    448,079.80x = 672,119.70 × 413,865.40
  4. Step 4: Simplify right side
    448,079.80x = 278,167,088,488.38
  5. Step 5: Solve for x
    x = 278,167,088,488.38/448,079.80
  6. Step 6: Final answer
    x = 620,798.10

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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.