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Finding the Fourth Proportional to 641,481.60, 885,240 and 355,002.24

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Solution

The fourth proportional to 641,481.60, 885,240 and 355,002.24 is: 489,900.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,481.60 : 885,240 = 355,002.24 : x
  2. Step 2: Convert to fraction form
    641,481.60/885,240 = 355,002.24/x
  3. Step 3: Cross multiply
    641,481.60x = 885,240 × 355,002.24
  4. Step 4: Simplify right side
    641,481.60x = 314,262,182,937.60
  5. Step 5: Solve for x
    x = 314,262,182,937.60/641,481.60
  6. Step 6: Final answer
    x = 489,900.54

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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.