Home / 641,868.46-885,806.16-355,388.55

Finding the Fourth Proportional to 641,868.46, 885,806.16 and 355,388.55

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Solution

The fourth proportional to 641,868.46, 885,806.16 and 355,388.55 is: 490,451.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,868.46 : 885,806.16 = 355,388.55 : x
  2. Step 2: Convert to fraction form
    641,868.46/885,806.16 = 355,388.55/x
  3. Step 3: Cross multiply
    641,868.46x = 885,806.16 × 355,388.55
  4. Step 4: Simplify right side
    641,868.46x = 314,805,366,783.47
  5. Step 5: Solve for x
    x = 314,805,366,783.47/641,868.46
  6. Step 6: Final answer
    x = 490,451.53

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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.