Home / 868,485.56-1,302,678.92-261,260.96

Finding the Fourth Proportional to 868,485.56, 1,302,678.92 and 261,260.96

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Solution

The fourth proportional to 868,485.56, 1,302,678.92 and 261,260.96 is: 391,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,485.56 : 1,302,678.92 = 261,260.96 : x
  2. Step 2: Convert to fraction form
    868,485.56/1,302,678.92 = 261,260.96/x
  3. Step 3: Cross multiply
    868,485.56x = 1,302,678.92 × 261,260.96
  4. Step 4: Simplify right side
    868,485.56x = 340,339,139,350.72
  5. Step 5: Solve for x
    x = 340,339,139,350.72/868,485.56
  6. Step 6: Final answer
    x = 391,876.57

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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.