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Finding the Fourth Proportional to 542,004.89, 747,946.89 and 312,571.85

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Solution

The fourth proportional to 542,004.89, 747,946.89 and 312,571.85 is: 431,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,004.89 : 747,946.89 = 312,571.85 : x
  2. Step 2: Convert to fraction form
    542,004.89/747,946.89 = 312,571.85/x
  3. Step 3: Cross multiply
    542,004.89x = 747,946.89 × 312,571.85
  4. Step 4: Simplify right side
    542,004.89x = 233,787,139,369.31
  5. Step 5: Solve for x
    x = 233,787,139,369.31/542,004.89
  6. Step 6: Final answer
    x = 431,337.70

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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.