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Finding the Fourth Proportional to 712,682.12, 983,469.12 and 426,360.08

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Solution

The fourth proportional to 712,682.12, 983,469.12 and 426,360.08 is: 588,357.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,682.12 : 983,469.12 = 426,360.08 : x
  2. Step 2: Convert to fraction form
    712,682.12/983,469.12 = 426,360.08/x
  3. Step 3: Cross multiply
    712,682.12x = 983,469.12 × 426,360.08
  4. Step 4: Simplify right side
    712,682.12x = 419,311,972,680.73
  5. Step 5: Solve for x
    x = 419,311,972,680.73/712,682.12
  6. Step 6: Final answer
    x = 588,357.64

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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.