Home / 498,770.10-688,319.13-272,415.60

Finding the Fourth Proportional to 498,770.10, 688,319.13 and 272,415.60

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Solution

The fourth proportional to 498,770.10, 688,319.13 and 272,415.60 is: 375,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,770.10 : 688,319.13 = 272,415.60 : x
  2. Step 2: Convert to fraction form
    498,770.10/688,319.13 = 272,415.60/x
  3. Step 3: Cross multiply
    498,770.10x = 688,319.13 × 272,415.60
  4. Step 4: Simplify right side
    498,770.10x = 187,508,868,790.43
  5. Step 5: Solve for x
    x = 187,508,868,790.43/498,770.10
  6. Step 6: Final answer
    x = 375,942.48

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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.