Home / 641,550.20-885,312.04-355,043.48

Finding the Fourth Proportional to 641,550.20, 885,312.04 and 355,043.48

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Solution

The fourth proportional to 641,550.20, 885,312.04 and 355,043.48 is: 489,944.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,550.20 : 885,312.04 = 355,043.48 : x
  2. Step 2: Convert to fraction form
    641,550.20/885,312.04 = 355,043.48/x
  3. Step 3: Cross multiply
    641,550.20x = 885,312.04 × 355,043.48
  4. Step 4: Simplify right side
    641,550.20x = 314,324,267,567.50
  5. Step 5: Solve for x
    x = 314,324,267,567.50/641,550.20
  6. Step 6: Final answer
    x = 489,944.93

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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.