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Finding the Fourth Proportional to 555,678.43, 766,836.08 and 301,029.55

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Solution

The fourth proportional to 555,678.43, 766,836.08 and 301,029.55 is: 415,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,678.43 : 766,836.08 = 301,029.55 : x
  2. Step 2: Convert to fraction form
    555,678.43/766,836.08 = 301,029.55/x
  3. Step 3: Cross multiply
    555,678.43x = 766,836.08 × 301,029.55
  4. Step 4: Simplify right side
    555,678.43x = 230,840,320,086.16
  5. Step 5: Solve for x
    x = 230,840,320,086.16/555,678.43
  6. Step 6: Final answer
    x = 415,420.70

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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.