Home / 738,520.20-1,107,780.30-422,717.40

Finding the Fourth Proportional to 738,520.20, 1,107,780.30 and 422,717.40

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Solution

The fourth proportional to 738,520.20, 1,107,780.30 and 422,717.40 is: 634,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,520.20 : 1,107,780.30 = 422,717.40 : x
  2. Step 2: Convert to fraction form
    738,520.20/1,107,780.30 = 422,717.40/x
  3. Step 3: Cross multiply
    738,520.20x = 1,107,780.30 × 422,717.40
  4. Step 4: Simplify right side
    738,520.20x = 468,278,008,187.22
  5. Step 5: Solve for x
    x = 468,278,008,187.22/738,520.20
  6. Step 6: Final answer
    x = 634,076.10

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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.