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Finding the Fourth Proportional to 638,062.70, 958,851.54 and 338,767.29

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Solution

The fourth proportional to 638,062.70, 958,851.54 and 338,767.29 is: 509,084.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,062.70 : 958,851.54 = 338,767.29 : x
  2. Step 2: Convert to fraction form
    638,062.70/958,851.54 = 338,767.29/x
  3. Step 3: Cross multiply
    638,062.70x = 958,851.54 × 338,767.29
  4. Step 4: Simplify right side
    638,062.70x = 324,827,537,718.13
  5. Step 5: Solve for x
    x = 324,827,537,718.13/638,062.70
  6. Step 6: Final answer
    x = 509,084.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.