Home / 1,280,856.30-1,919,210.85-806,693.10

Finding the Fourth Proportional to 1,280,856.30, 1,919,210.85 and 806,693.10

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Solution

The fourth proportional to 1,280,856.30, 1,919,210.85 and 806,693.10 is: 1,208,733.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,856.30 : 1,919,210.85 = 806,693.10 : x
  2. Step 2: Convert to fraction form
    1,280,856.30/1,919,210.85 = 806,693.10/x
  3. Step 3: Cross multiply
    1,280,856.30x = 1,919,210.85 × 806,693.10
  4. Step 4: Simplify right side
    1,280,856.30x = 1,548,214,150,140.14
  5. Step 5: Solve for x
    x = 1,548,214,150,140.14/1,280,856.30
  6. Step 6: Final answer
    x = 1,208,733.68

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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.