Home / 498,869.78-688,439.13-272,516.90

Finding the Fourth Proportional to 498,869.78, 688,439.13 and 272,516.90

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Solution

The fourth proportional to 498,869.78, 688,439.13 and 272,516.90 is: 376,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,869.78 : 688,439.13 = 272,516.90 : x
  2. Step 2: Convert to fraction form
    498,869.78/688,439.13 = 272,516.90/x
  3. Step 3: Cross multiply
    498,869.78x = 688,439.13 × 272,516.90
  4. Step 4: Simplify right side
    498,869.78x = 187,611,297,546.30
  5. Step 5: Solve for x
    x = 187,611,297,546.30/498,869.78
  6. Step 6: Final answer
    x = 376,072.68

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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.