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Finding the Fourth Proportional to 641,682.40, 962,523.60 and 442,616.80

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Solution

The fourth proportional to 641,682.40, 962,523.60 and 442,616.80 is: 663,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,682.40 : 962,523.60 = 442,616.80 : x
  2. Step 2: Convert to fraction form
    641,682.40/962,523.60 = 442,616.80/x
  3. Step 3: Cross multiply
    641,682.40x = 962,523.60 × 442,616.80
  4. Step 4: Simplify right side
    641,682.40x = 426,029,115,756.48
  5. Step 5: Solve for x
    x = 426,029,115,756.48/641,682.40
  6. Step 6: Final answer
    x = 663,925.20

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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.