Home / 639,130.06-881,998.88-352,650.17

Finding the Fourth Proportional to 639,130.06, 881,998.88 and 352,650.17

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Solution

The fourth proportional to 639,130.06, 881,998.88 and 352,650.17 is: 486,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,130.06 : 881,998.88 = 352,650.17 : x
  2. Step 2: Convert to fraction form
    639,130.06/881,998.88 = 352,650.17/x
  3. Step 3: Cross multiply
    639,130.06x = 881,998.88 × 352,650.17
  4. Step 4: Simplify right side
    639,130.06x = 311,037,055,413.56
  5. Step 5: Solve for x
    x = 311,037,055,413.56/639,130.06
  6. Step 6: Final answer
    x = 486,656.90

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Similar ratio
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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.