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Finding the Fourth Proportional to 638,097.12, 880,616.64 and 351,617.16

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Solution

The fourth proportional to 638,097.12, 880,616.64 and 351,617.16 is: 485,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,097.12 : 880,616.64 = 351,617.16 : x
  2. Step 2: Convert to fraction form
    638,097.12/880,616.64 = 351,617.16/x
  3. Step 3: Cross multiply
    638,097.12x = 880,616.64 × 351,617.16
  4. Step 4: Simplify right side
    638,097.12x = 309,639,922,005.54
  5. Step 5: Solve for x
    x = 309,639,922,005.54/638,097.12
  6. Step 6: Final answer
    x = 485,255.16

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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.