Home / 498,777.74-688,309-272,418.38

Finding the Fourth Proportional to 498,777.74, 688,309 and 272,418.38

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Solution

The fourth proportional to 498,777.74, 688,309 and 272,418.38 is: 375,935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,777.74 : 688,309 = 272,418.38 : x
  2. Step 2: Convert to fraction form
    498,777.74/688,309 = 272,418.38/x
  3. Step 3: Cross multiply
    498,777.74x = 688,309 × 272,418.38
  4. Step 4: Simplify right side
    498,777.74x = 187,508,022,719.42
  5. Step 5: Solve for x
    x = 187,508,022,719.42/498,777.74
  6. Step 6: Final answer
    x = 375,935.03

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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.