Home / 498,790-688,330.20-272,436.04

Finding the Fourth Proportional to 498,790, 688,330.20 and 272,436.04

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Solution

The fourth proportional to 498,790, 688,330.20 and 272,436.04 is: 375,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,790 : 688,330.20 = 272,436.04 : x
  2. Step 2: Convert to fraction form
    498,790/688,330.20 = 272,436.04/x
  3. Step 3: Cross multiply
    498,790x = 688,330.20 × 272,436.04
  4. Step 4: Simplify right side
    498,790x = 187,525,953,900.41
  5. Step 5: Solve for x
    x = 187,525,953,900.41/498,790
  6. Step 6: Final answer
    x = 375,961.74

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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.