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Finding the Fourth Proportional to 638,005.65, 880,447.91 and 351,523.23

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Solution

The fourth proportional to 638,005.65, 880,447.91 and 351,523.23 is: 485,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,005.65 : 880,447.91 = 351,523.23 : x
  2. Step 2: Convert to fraction form
    638,005.65/880,447.91 = 351,523.23/x
  3. Step 3: Cross multiply
    638,005.65x = 880,447.91 × 351,523.23
  4. Step 4: Simplify right side
    638,005.65x = 309,497,891,412.33
  5. Step 5: Solve for x
    x = 309,497,891,412.33/638,005.65
  6. Step 6: Final answer
    x = 485,102.12

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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.