Home / 642,555.51-963,517.36-263,373.45

Finding the Fourth Proportional to 642,555.51, 963,517.36 and 263,373.45

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Solution

The fourth proportional to 642,555.51, 963,517.36 and 263,373.45 is: 394,930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,555.51 : 963,517.36 = 263,373.45 : x
  2. Step 2: Convert to fraction form
    642,555.51/963,517.36 = 263,373.45/x
  3. Step 3: Cross multiply
    642,555.51x = 963,517.36 × 263,373.45
  4. Step 4: Simplify right side
    642,555.51x = 253,764,885,103.64
  5. Step 5: Solve for x
    x = 253,764,885,103.64/642,555.51
  6. Step 6: Final answer
    x = 394,930.68

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Double scale
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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.