Home / 656,680.14-906,179.54-381,016.71

Finding the Fourth Proportional to 656,680.14, 906,179.54 and 381,016.71

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Solution

The fourth proportional to 656,680.14, 906,179.54 and 381,016.71 is: 525,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,680.14 : 906,179.54 = 381,016.71 : x
  2. Step 2: Convert to fraction form
    656,680.14/906,179.54 = 381,016.71/x
  3. Step 3: Cross multiply
    656,680.14x = 906,179.54 × 381,016.71
  4. Step 4: Simplify right side
    656,680.14x = 345,269,545,095.03
  5. Step 5: Solve for x
    x = 345,269,545,095.03/656,680.14
  6. Step 6: Final answer
    x = 525,780.40

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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.