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Finding the Fourth Proportional to 563,015.81, 842,404.91 and 394,864.37

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Solution

The fourth proportional to 563,015.81, 842,404.91 and 394,864.37 is: 590,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,015.81 : 842,404.91 = 394,864.37 : x
  2. Step 2: Convert to fraction form
    563,015.81/842,404.91 = 394,864.37/x
  3. Step 3: Cross multiply
    563,015.81x = 842,404.91 × 394,864.37
  4. Step 4: Simplify right side
    563,015.81x = 332,635,683,265.84
  5. Step 5: Solve for x
    x = 332,635,683,265.84/563,015.81
  6. Step 6: Final answer
    x = 590,810.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.