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Finding the Fourth Proportional to 704,721.96, 972,493.38 and 394,624.80

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Solution

The fourth proportional to 704,721.96, 972,493.38 and 394,624.80 is: 544,569.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,721.96 : 972,493.38 = 394,624.80 : x
  2. Step 2: Convert to fraction form
    704,721.96/972,493.38 = 394,624.80/x
  3. Step 3: Cross multiply
    704,721.96x = 972,493.38 × 394,624.80
  4. Step 4: Simplify right side
    704,721.96x = 383,770,005,583.82
  5. Step 5: Solve for x
    x = 383,770,005,583.82/704,721.96
  6. Step 6: Final answer
    x = 544,569.39

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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.