Home / 853,940.40-1,280,910.60-539,012.40

Finding the Fourth Proportional to 853,940.40, 1,280,910.60 and 539,012.40

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Solution

The fourth proportional to 853,940.40, 1,280,910.60 and 539,012.40 is: 808,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,940.40 : 1,280,910.60 = 539,012.40 : x
  2. Step 2: Convert to fraction form
    853,940.40/1,280,910.60 = 539,012.40/x
  3. Step 3: Cross multiply
    853,940.40x = 1,280,910.60 × 539,012.40
  4. Step 4: Simplify right side
    853,940.40x = 690,426,696,691.44
  5. Step 5: Solve for x
    x = 690,426,696,691.44/853,940.40
  6. Step 6: Final answer
    x = 808,518.60

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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.