Home / 498,805.20-688,343.40-272,445.84

Finding the Fourth Proportional to 498,805.20, 688,343.40 and 272,445.84

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Solution

The fourth proportional to 498,805.20, 688,343.40 and 272,445.84 is: 375,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,805.20 : 688,343.40 = 272,445.84 : x
  2. Step 2: Convert to fraction form
    498,805.20/688,343.40 = 272,445.84/x
  3. Step 3: Cross multiply
    498,805.20x = 688,343.40 × 272,445.84
  4. Step 4: Simplify right side
    498,805.20x = 187,536,295,821.46
  5. Step 5: Solve for x
    x = 187,536,295,821.46/498,805.20
  6. Step 6: Final answer
    x = 375,971.01

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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.