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Finding the Fourth Proportional to 641,759.48, 885,600.18 and 355,262.48

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Solution

The fourth proportional to 641,759.48, 885,600.18 and 355,262.48 is: 490,246.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,759.48 : 885,600.18 = 355,262.48 : x
  2. Step 2: Convert to fraction form
    641,759.48/885,600.18 = 355,262.48/x
  3. Step 3: Cross multiply
    641,759.48x = 885,600.18 × 355,262.48
  4. Step 4: Simplify right side
    641,759.48x = 314,620,516,235.25
  5. Step 5: Solve for x
    x = 314,620,516,235.25/641,759.48
  6. Step 6: Final answer
    x = 490,246.78

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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.