Home / 639,566.60-958,086.30-415,083.20

Finding the Fourth Proportional to 639,566.60, 958,086.30 and 415,083.20

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Solution

The fourth proportional to 639,566.60, 958,086.30 and 415,083.20 is: 621,804.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,566.60 : 958,086.30 = 415,083.20 : x
  2. Step 2: Convert to fraction form
    639,566.60/958,086.30 = 415,083.20/x
  3. Step 3: Cross multiply
    639,566.60x = 958,086.30 × 415,083.20
  4. Step 4: Simplify right side
    639,566.60x = 397,685,527,280.16
  5. Step 5: Solve for x
    x = 397,685,527,280.16/639,566.60
  6. Step 6: Final answer
    x = 621,804.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.