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Finding the Fourth Proportional to 555,419.36, 765,952.20 and 383,061.89

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Solution

The fourth proportional to 555,419.36, 765,952.20 and 383,061.89 is: 528,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,419.36 : 765,952.20 = 383,061.89 : x
  2. Step 2: Convert to fraction form
    555,419.36/765,952.20 = 383,061.89/x
  3. Step 3: Cross multiply
    555,419.36x = 765,952.20 × 383,061.89
  4. Step 4: Simplify right side
    555,419.36x = 293,407,099,296.54
  5. Step 5: Solve for x
    x = 293,407,099,296.54/555,419.36
  6. Step 6: Final answer
    x = 528,262.28

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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.