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Finding the Fourth Proportional to 664,271.80, 996,407.70 and 384,335.80

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Solution

The fourth proportional to 664,271.80, 996,407.70 and 384,335.80 is: 576,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,271.80 : 996,407.70 = 384,335.80 : x
  2. Step 2: Convert to fraction form
    664,271.80/996,407.70 = 384,335.80/x
  3. Step 3: Cross multiply
    664,271.80x = 996,407.70 × 384,335.80
  4. Step 4: Simplify right side
    664,271.80x = 382,955,150,505.66
  5. Step 5: Solve for x
    x = 382,955,150,505.66/664,271.80
  6. Step 6: Final answer
    x = 576,503.70

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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.