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Finding the Fourth Proportional to 641,760.09, 885,825.92 and 370,009.40

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Solution

The fourth proportional to 641,760.09, 885,825.92 and 370,009.40 is: 510,726.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,760.09 : 885,825.92 = 370,009.40 : x
  2. Step 2: Convert to fraction form
    641,760.09/885,825.92 = 370,009.40/x
  3. Step 3: Cross multiply
    641,760.09x = 885,825.92 × 370,009.40
  4. Step 4: Simplify right side
    641,760.09x = 327,763,910,884.47
  5. Step 5: Solve for x
    x = 327,763,910,884.47/641,760.09
  6. Step 6: Final answer
    x = 510,726.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.