Home / 1,918,456.20-2,878,721.10-853,662.60

Finding the Fourth Proportional to 1,918,456.20, 2,878,721.10 and 853,662.60

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Solution

The fourth proportional to 1,918,456.20, 2,878,721.10 and 853,662.60 is: 1,280,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,456.20 : 2,878,721.10 = 853,662.60 : x
  2. Step 2: Convert to fraction form
    1,918,456.20/2,878,721.10 = 853,662.60/x
  3. Step 3: Cross multiply
    1,918,456.20x = 2,878,721.10 × 853,662.60
  4. Step 4: Simplify right side
    1,918,456.20x = 2,457,456,538,900.86
  5. Step 5: Solve for x
    x = 2,457,456,538,900.86/1,918,456.20
  6. Step 6: Final answer
    x = 1,280,955.25

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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.