Home / 638,261.56-880,806.30-351,782.38

Finding the Fourth Proportional to 638,261.56, 880,806.30 and 351,782.38

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Solution

The fourth proportional to 638,261.56, 880,806.30 and 351,782.38 is: 485,462.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,261.56 : 880,806.30 = 351,782.38 : x
  2. Step 2: Convert to fraction form
    638,261.56/880,806.30 = 351,782.38/x
  3. Step 3: Cross multiply
    638,261.56x = 880,806.30 × 351,782.38
  4. Step 4: Simplify right side
    638,261.56x = 309,852,136,532.99
  5. Step 5: Solve for x
    x = 309,852,136,532.99/638,261.56
  6. Step 6: Final answer
    x = 485,462.63

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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.