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Finding the Fourth Proportional to 555,412.17, 766,464.42 and 300,763.36

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Solution

The fourth proportional to 555,412.17, 766,464.42 and 300,763.36 is: 415,051.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,412.17 : 766,464.42 = 300,763.36 : x
  2. Step 2: Convert to fraction form
    555,412.17/766,464.42 = 300,763.36/x
  3. Step 3: Cross multiply
    555,412.17x = 766,464.42 × 300,763.36
  4. Step 4: Simplify right side
    555,412.17x = 230,524,416,365.59
  5. Step 5: Solve for x
    x = 230,524,416,365.59/555,412.17
  6. Step 6: Final answer
    x = 415,051.07

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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.