Home / 641,996.40-963,109.80-268,057.20

Finding the Fourth Proportional to 641,996.40, 963,109.80 and 268,057.20

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Solution

The fourth proportional to 641,996.40, 963,109.80 and 268,057.20 is: 402,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,996.40 : 963,109.80 = 268,057.20 : x
  2. Step 2: Convert to fraction form
    641,996.40/963,109.80 = 268,057.20/x
  3. Step 3: Cross multiply
    641,996.40x = 963,109.80 × 268,057.20
  4. Step 4: Simplify right side
    641,996.40x = 258,168,516,280.56
  5. Step 5: Solve for x
    x = 258,168,516,280.56/641,996.40
  6. Step 6: Final answer
    x = 402,133.90

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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.