Home / 638,072.45-880,578.65-351,592.19

Finding the Fourth Proportional to 638,072.45, 880,578.65 and 351,592.19

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Solution

The fourth proportional to 638,072.45, 880,578.65 and 351,592.19 is: 485,218.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,072.45 : 880,578.65 = 351,592.19 : x
  2. Step 2: Convert to fraction form
    638,072.45/880,578.65 = 351,592.19/x
  3. Step 3: Cross multiply
    638,072.45x = 880,578.65 × 351,592.19
  4. Step 4: Simplify right side
    638,072.45x = 309,604,574,262.78
  5. Step 5: Solve for x
    x = 309,604,574,262.78/638,072.45
  6. Step 6: Final answer
    x = 485,218.53

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Double scale
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Similar ratio
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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.