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Finding the Fourth Proportional to 555,373.89, 766,419.66 and 300,725.10

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Solution

The fourth proportional to 555,373.89, 766,419.66 and 300,725.10 is: 415,002.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,373.89 : 766,419.66 = 300,725.10 : x
  2. Step 2: Convert to fraction form
    555,373.89/766,419.66 = 300,725.10/x
  3. Step 3: Cross multiply
    555,373.89x = 766,419.66 × 300,725.10
  4. Step 4: Simplify right side
    555,373.89x = 230,481,628,895.47
  5. Step 5: Solve for x
    x = 230,481,628,895.47/555,373.89
  6. Step 6: Final answer
    x = 415,002.64

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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.