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Finding the Fourth Proportional to 555,790.68, 766,991.43 and 301,142.07

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Solution

The fourth proportional to 555,790.68, 766,991.43 and 301,142.07 is: 415,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,790.68 : 766,991.43 = 301,142.07 : x
  2. Step 2: Convert to fraction form
    555,790.68/766,991.43 = 301,142.07/x
  3. Step 3: Cross multiply
    555,790.68x = 766,991.43 × 301,142.07
  4. Step 4: Simplify right side
    555,790.68x = 230,973,386,902.46
  5. Step 5: Solve for x
    x = 230,973,386,902.46/555,790.68
  6. Step 6: Final answer
    x = 415,576.21

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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.