Home / 859,127.60-1,288,691.40-853,878.80

Finding the Fourth Proportional to 859,127.60, 1,288,691.40 and 853,878.80

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Solution

The fourth proportional to 859,127.60, 1,288,691.40 and 853,878.80 is: 1,280,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,127.60 : 1,288,691.40 = 853,878.80 : x
  2. Step 2: Convert to fraction form
    859,127.60/1,288,691.40 = 853,878.80/x
  3. Step 3: Cross multiply
    859,127.60x = 1,288,691.40 × 853,878.80
  4. Step 4: Simplify right side
    859,127.60x = 1,100,386,266,202.32
  5. Step 5: Solve for x
    x = 1,100,386,266,202.32/859,127.60
  6. Step 6: Final answer
    x = 1,280,818.20

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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.