Home / 1,328,780.43-1,993,432.95-487,339.47

Finding the Fourth Proportional to 1,328,780.43, 1,993,432.95 and 487,339.47

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Solution

The fourth proportional to 1,328,780.43, 1,993,432.95 and 487,339.47 is: 731,105.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,780.43 : 1,993,432.95 = 487,339.47 : x
  2. Step 2: Convert to fraction form
    1,328,780.43/1,993,432.95 = 487,339.47/x
  3. Step 3: Cross multiply
    1,328,780.43x = 1,993,432.95 × 487,339.47
  4. Step 4: Simplify right side
    1,328,780.43x = 971,478,557,333.54
  5. Step 5: Solve for x
    x = 971,478,557,333.54/1,328,780.43
  6. Step 6: Final answer
    x = 731,105.41

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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.