Home / 878,184.38-1,211,889.68-490,999.72

Finding the Fourth Proportional to 878,184.38, 1,211,889.68 and 490,999.72

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Solution

The fourth proportional to 878,184.38, 1,211,889.68 and 490,999.72 is: 677,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,184.38 : 1,211,889.68 = 490,999.72 : x
  2. Step 2: Convert to fraction form
    878,184.38/1,211,889.68 = 490,999.72/x
  3. Step 3: Cross multiply
    878,184.38x = 1,211,889.68 × 490,999.72
  4. Step 4: Simplify right side
    878,184.38x = 595,037,493,550.89
  5. Step 5: Solve for x
    x = 595,037,493,550.89/878,184.38
  6. Step 6: Final answer
    x = 677,576.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.