Home / 641,956.12-885,898.89-355,476.20

Finding the Fourth Proportional to 641,956.12, 885,898.89 and 355,476.20

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Solution

The fourth proportional to 641,956.12, 885,898.89 and 355,476.20 is: 490,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,956.12 : 885,898.89 = 355,476.20 : x
  2. Step 2: Convert to fraction form
    641,956.12/885,898.89 = 355,476.20/x
  3. Step 3: Cross multiply
    641,956.12x = 885,898.89 × 355,476.20
  4. Step 4: Simplify right side
    641,956.12x = 314,915,966,571.92
  5. Step 5: Solve for x
    x = 314,915,966,571.92/641,956.12
  6. Step 6: Final answer
    x = 490,556.84

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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.