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Finding the Fourth Proportional to 868,242.92, 1,301,859.48 and 328,540.87

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Solution

The fourth proportional to 868,242.92, 1,301,859.48 and 328,540.87 is: 492,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,242.92 : 1,301,859.48 = 328,540.87 : x
  2. Step 2: Convert to fraction form
    868,242.92/1,301,859.48 = 328,540.87/x
  3. Step 3: Cross multiply
    868,242.92x = 1,301,859.48 × 328,540.87
  4. Step 4: Simplify right side
    868,242.92x = 427,714,048,557.00
  5. Step 5: Solve for x
    x = 427,714,048,557.00/868,242.92
  6. Step 6: Final answer
    x = 492,620.25

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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.