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Finding the Fourth Proportional to 456,352.26, 687,609.14 and 378,130.97

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Solution

The fourth proportional to 456,352.26, 687,609.14 and 378,130.97 is: 569,749.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,352.26 : 687,609.14 = 378,130.97 : x
  2. Step 2: Convert to fraction form
    456,352.26/687,609.14 = 378,130.97/x
  3. Step 3: Cross multiply
    456,352.26x = 687,609.14 × 378,130.97
  4. Step 4: Simplify right side
    456,352.26x = 260,006,305,760.37
  5. Step 5: Solve for x
    x = 260,006,305,760.37/456,352.26
  6. Step 6: Final answer
    x = 569,749.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.