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Finding the Fourth Proportional to 638,150.01, 880,665.48 and 351,688.55

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Solution

The fourth proportional to 638,150.01, 880,665.48 and 351,688.55 is: 485,340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,150.01 : 880,665.48 = 351,688.55 : x
  2. Step 2: Convert to fraction form
    638,150.01/880,665.48 = 351,688.55/x
  3. Step 3: Cross multiply
    638,150.01x = 880,665.48 × 351,688.55
  4. Step 4: Simplify right side
    638,150.01x = 309,719,965,696.25
  5. Step 5: Solve for x
    x = 309,719,965,696.25/638,150.01
  6. Step 6: Final answer
    x = 485,340.38

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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.