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Finding the Fourth Proportional to 638,270.36, 880,863.74 and 351,841.40

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Solution

The fourth proportional to 638,270.36, 880,863.74 and 351,841.40 is: 485,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,270.36 : 880,863.74 = 351,841.40 : x
  2. Step 2: Convert to fraction form
    638,270.36/880,863.74 = 351,841.40/x
  3. Step 3: Cross multiply
    638,270.36x = 880,863.74 × 351,841.40
  4. Step 4: Simplify right side
    638,270.36x = 309,924,331,490.84
  5. Step 5: Solve for x
    x = 309,924,331,490.84/638,270.36
  6. Step 6: Final answer
    x = 485,569.05

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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.