Home / 858,486.90-1,287,730.35-543,299.70

Finding the Fourth Proportional to 858,486.90, 1,287,730.35 and 543,299.70

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Solution

The fourth proportional to 858,486.90, 1,287,730.35 and 543,299.70 is: 814,949.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,486.90 : 1,287,730.35 = 543,299.70 : x
  2. Step 2: Convert to fraction form
    858,486.90/1,287,730.35 = 543,299.70/x
  3. Step 3: Cross multiply
    858,486.90x = 1,287,730.35 × 543,299.70
  4. Step 4: Simplify right side
    858,486.90x = 699,623,512,835.90
  5. Step 5: Solve for x
    x = 699,623,512,835.90/858,486.90
  6. Step 6: Final answer
    x = 814,949.55

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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.