Home / 1,988,795.70-2,981,196-639,966.96

Finding the Fourth Proportional to 1,988,795.70, 2,981,196 and 639,966.96

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Solution

The fourth proportional to 1,988,795.70, 2,981,196 and 639,966.96 is: 959,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,795.70 : 2,981,196 = 639,966.96 : x
  2. Step 2: Convert to fraction form
    1,988,795.70/2,981,196 = 639,966.96/x
  3. Step 3: Cross multiply
    1,988,795.70x = 2,981,196 × 639,966.96
  4. Step 4: Simplify right side
    1,988,795.70x = 1,907,866,941,284.16
  5. Step 5: Solve for x
    x = 1,907,866,941,284.16/1,988,795.70
  6. Step 6: Final answer
    x = 959,307.66

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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.