Home / 1,280,851.80-1,919,204.10-806,688.60

Finding the Fourth Proportional to 1,280,851.80, 1,919,204.10 and 806,688.60

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Solution

The fourth proportional to 1,280,851.80, 1,919,204.10 and 806,688.60 is: 1,208,726.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,851.80 : 1,919,204.10 = 806,688.60 : x
  2. Step 2: Convert to fraction form
    1,280,851.80/1,919,204.10 = 806,688.60/x
  3. Step 3: Cross multiply
    1,280,851.80x = 1,919,204.10 × 806,688.60
  4. Step 4: Simplify right side
    1,280,851.80x = 1,548,200,068,543.26
  5. Step 5: Solve for x
    x = 1,548,200,068,543.26/1,280,851.80
  6. Step 6: Final answer
    x = 1,208,726.93

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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.