Home / 639,567.60-958,087.80-415,084.20

Finding the Fourth Proportional to 639,567.60, 958,087.80 and 415,084.20

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Solution

The fourth proportional to 639,567.60, 958,087.80 and 415,084.20 is: 621,806.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,567.60 : 958,087.80 = 415,084.20 : x
  2. Step 2: Convert to fraction form
    639,567.60/958,087.80 = 415,084.20/x
  3. Step 3: Cross multiply
    639,567.60x = 958,087.80 × 415,084.20
  4. Step 4: Simplify right side
    639,567.60x = 397,687,107,992.76
  5. Step 5: Solve for x
    x = 397,687,107,992.76/639,567.60
  6. Step 6: Final answer
    x = 621,806.21

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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.