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Finding the Fourth Proportional to 638,302.77, 880,846.92 and 351,849.51

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Solution

The fourth proportional to 638,302.77, 880,846.92 and 351,849.51 is: 485,546.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,302.77 : 880,846.92 = 351,849.51 : x
  2. Step 2: Convert to fraction form
    638,302.77/880,846.92 = 351,849.51/x
  3. Step 3: Cross multiply
    638,302.77x = 880,846.92 × 351,849.51
  4. Step 4: Simplify right side
    638,302.77x = 309,925,557,187.01
  5. Step 5: Solve for x
    x = 309,925,557,187.01/638,302.77
  6. Step 6: Final answer
    x = 485,546.31

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Double scale
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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.