Home / 499,126.89-688,800.21-272,772.39

Finding the Fourth Proportional to 499,126.89, 688,800.21 and 272,772.39

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Solution

The fourth proportional to 499,126.89, 688,800.21 and 272,772.39 is: 376,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,126.89 : 688,800.21 = 272,772.39 : x
  2. Step 2: Convert to fraction form
    499,126.89/688,800.21 = 272,772.39/x
  3. Step 3: Cross multiply
    499,126.89x = 688,800.21 × 272,772.39
  4. Step 4: Simplify right side
    499,126.89x = 187,885,679,514.20
  5. Step 5: Solve for x
    x = 187,885,679,514.20/499,126.89
  6. Step 6: Final answer
    x = 376,428.69

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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.