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Finding the Fourth Proportional to 638,098.16, 880,614.60 and 351,618.08

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Solution

The fourth proportional to 638,098.16, 880,614.60 and 351,618.08 is: 485,254.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,098.16 : 880,614.60 = 351,618.08 : x
  2. Step 2: Convert to fraction form
    638,098.16/880,614.60 = 351,618.08/x
  3. Step 3: Cross multiply
    638,098.16x = 880,614.60 × 351,618.08
  4. Step 4: Simplify right side
    638,098.16x = 309,640,014,871.97
  5. Step 5: Solve for x
    x = 309,640,014,871.97/638,098.16
  6. Step 6: Final answer
    x = 485,254.52

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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.