Home / 456,819.40-686,006.70-338,624.20

Finding the Fourth Proportional to 456,819.40, 686,006.70 and 338,624.20

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Solution

The fourth proportional to 456,819.40, 686,006.70 and 338,624.20 is: 508,512.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,819.40 : 686,006.70 = 338,624.20 : x
  2. Step 2: Convert to fraction form
    456,819.40/686,006.70 = 338,624.20/x
  3. Step 3: Cross multiply
    456,819.40x = 686,006.70 × 338,624.20
  4. Step 4: Simplify right side
    456,819.40x = 232,298,469,982.14
  5. Step 5: Solve for x
    x = 232,298,469,982.14/456,819.40
  6. Step 6: Final answer
    x = 508,512.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.