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Finding the Fourth Proportional to 579,326.51, 869,229.57 and 312,773.54

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Solution

The fourth proportional to 579,326.51, 869,229.57 and 312,773.54 is: 469,289.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,326.51 : 869,229.57 = 312,773.54 : x
  2. Step 2: Convert to fraction form
    579,326.51/869,229.57 = 312,773.54/x
  3. Step 3: Cross multiply
    579,326.51x = 869,229.57 × 312,773.54
  4. Step 4: Simplify right side
    579,326.51x = 271,872,005,335.43
  5. Step 5: Solve for x
    x = 271,872,005,335.43/579,326.51
  6. Step 6: Final answer
    x = 469,289.78

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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.