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Finding the Fourth Proportional to 690,408.88, 952,571.74 and 445,289.92

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Solution

The fourth proportional to 690,408.88, 952,571.74 and 445,289.92 is: 614,375.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,408.88 : 952,571.74 = 445,289.92 : x
  2. Step 2: Convert to fraction form
    690,408.88/952,571.74 = 445,289.92/x
  3. Step 3: Cross multiply
    690,408.88x = 952,571.74 × 445,289.92
  4. Step 4: Simplify right side
    690,408.88x = 424,170,593,898.86
  5. Step 5: Solve for x
    x = 424,170,593,898.86/690,408.88
  6. Step 6: Final answer
    x = 614,375.92

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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.