Home / 691,772.40-1,037,308.68-211,857.12

Finding the Fourth Proportional to 691,772.40, 1,037,308.68 and 211,857.12

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Solution

The fourth proportional to 691,772.40, 1,037,308.68 and 211,857.12 is: 317,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,772.40 : 1,037,308.68 = 211,857.12 : x
  2. Step 2: Convert to fraction form
    691,772.40/1,037,308.68 = 211,857.12/x
  3. Step 3: Cross multiply
    691,772.40x = 1,037,308.68 × 211,857.12
  4. Step 4: Simplify right side
    691,772.40x = 219,761,229,495.80
  5. Step 5: Solve for x
    x = 219,761,229,495.80/691,772.40
  6. Step 6: Final answer
    x = 317,678.52

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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.