Home / 498,771.10-688,320.51-272,416.60

Finding the Fourth Proportional to 498,771.10, 688,320.51 and 272,416.60

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Solution

The fourth proportional to 498,771.10, 688,320.51 and 272,416.60 is: 375,943.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,771.10 : 688,320.51 = 272,416.60 : x
  2. Step 2: Convert to fraction form
    498,771.10/688,320.51 = 272,416.60/x
  3. Step 3: Cross multiply
    498,771.10x = 688,320.51 × 272,416.60
  4. Step 4: Simplify right side
    498,771.10x = 187,509,933,044.47
  5. Step 5: Solve for x
    x = 187,509,933,044.47/498,771.10
  6. Step 6: Final answer
    x = 375,943.86

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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.