Home / 1,326,006.80-1,989,010.20-379,408.40

Finding the Fourth Proportional to 1,326,006.80, 1,989,010.20 and 379,408.40

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Solution

The fourth proportional to 1,326,006.80, 1,989,010.20 and 379,408.40 is: 569,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,006.80 : 1,989,010.20 = 379,408.40 : x
  2. Step 2: Convert to fraction form
    1,326,006.80/1,989,010.20 = 379,408.40/x
  3. Step 3: Cross multiply
    1,326,006.80x = 1,989,010.20 × 379,408.40
  4. Step 4: Simplify right side
    1,326,006.80x = 754,647,177,565.68
  5. Step 5: Solve for x
    x = 754,647,177,565.68/1,326,006.80
  6. Step 6: Final answer
    x = 569,112.60

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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.