Home / 648,642.71-972,964.07-193,240.87

Finding the Fourth Proportional to 648,642.71, 972,964.07 and 193,240.87

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Solution

The fourth proportional to 648,642.71, 972,964.07 and 193,240.87 is: 289,861.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,642.71 : 972,964.07 = 193,240.87 : x
  2. Step 2: Convert to fraction form
    648,642.71/972,964.07 = 193,240.87/x
  3. Step 3: Cross multiply
    648,642.71x = 972,964.07 × 193,240.87
  4. Step 4: Simplify right side
    648,642.71x = 188,016,423,365.54
  5. Step 5: Solve for x
    x = 188,016,423,365.54/648,642.71
  6. Step 6: Final answer
    x = 289,861.31

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Double scale
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Similar ratio
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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.