Home / 859,126.60-1,288,689.90-853,877.80

Finding the Fourth Proportional to 859,126.60, 1,288,689.90 and 853,877.80

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Solution

The fourth proportional to 859,126.60, 1,288,689.90 and 853,877.80 is: 1,280,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,126.60 : 1,288,689.90 = 853,877.80 : x
  2. Step 2: Convert to fraction form
    859,126.60/1,288,689.90 = 853,877.80/x
  3. Step 3: Cross multiply
    859,126.60x = 1,288,689.90 × 853,877.80
  4. Step 4: Simplify right side
    859,126.60x = 1,100,383,696,694.22
  5. Step 5: Solve for x
    x = 1,100,383,696,694.22/859,126.60
  6. Step 6: Final answer
    x = 1,280,816.70

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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.