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Finding the Fourth Proportional to 448,573.20, 672,859.80 and 413,143.80

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Solution

The fourth proportional to 448,573.20, 672,859.80 and 413,143.80 is: 619,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,573.20 : 672,859.80 = 413,143.80 : x
  2. Step 2: Convert to fraction form
    448,573.20/672,859.80 = 413,143.80/x
  3. Step 3: Cross multiply
    448,573.20x = 672,859.80 × 413,143.80
  4. Step 4: Simplify right side
    448,573.20x = 277,987,854,639.24
  5. Step 5: Solve for x
    x = 277,987,854,639.24/448,573.20
  6. Step 6: Final answer
    x = 619,715.70

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Similar ratio
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1.5x scale

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.