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Finding the Fourth Proportional to 704,697.20, 972,474.76 and 394,600.40

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Solution

The fourth proportional to 704,697.20, 972,474.76 and 394,600.40 is: 544,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,697.20 : 972,474.76 = 394,600.40 : x
  2. Step 2: Convert to fraction form
    704,697.20/972,474.76 = 394,600.40/x
  3. Step 3: Cross multiply
    704,697.20x = 972,474.76 × 394,600.40
  4. Step 4: Simplify right side
    704,697.20x = 383,738,929,285.90
  5. Step 5: Solve for x
    x = 383,738,929,285.90/704,697.20
  6. Step 6: Final answer
    x = 544,544.42

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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.