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Finding the Fourth Proportional to 573,679.80, 791,664.30 and 312,028.38

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Solution

The fourth proportional to 573,679.80, 791,664.30 and 312,028.38 is: 430,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,679.80 : 791,664.30 = 312,028.38 : x
  2. Step 2: Convert to fraction form
    573,679.80/791,664.30 = 312,028.38/x
  3. Step 3: Cross multiply
    573,679.80x = 791,664.30 × 312,028.38
  4. Step 4: Simplify right side
    573,679.80x = 247,021,729,032.83
  5. Step 5: Solve for x
    x = 247,021,729,032.83/573,679.80
  6. Step 6: Final answer
    x = 430,591.65

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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.