Home / 638,166.20-880,665.18-351,686.48

Finding the Fourth Proportional to 638,166.20, 880,665.18 and 351,686.48

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Solution

The fourth proportional to 638,166.20, 880,665.18 and 351,686.48 is: 485,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,166.20 : 880,665.18 = 351,686.48 : x
  2. Step 2: Convert to fraction form
    638,166.20/880,665.18 = 351,686.48/x
  3. Step 3: Cross multiply
    638,166.20x = 880,665.18 × 351,686.48
  4. Step 4: Simplify right side
    638,166.20x = 309,718,037,212.77
  5. Step 5: Solve for x
    x = 309,718,037,212.77/638,166.20
  6. Step 6: Final answer
    x = 485,325.04

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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.