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Finding the Fourth Proportional to 555,387.09, 766,437.86 and 300,738.27

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Solution

The fourth proportional to 555,387.09, 766,437.86 and 300,738.27 is: 415,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,387.09 : 766,437.86 = 300,738.27 : x
  2. Step 2: Convert to fraction form
    555,387.09/766,437.86 = 300,738.27/x
  3. Step 3: Cross multiply
    555,387.09x = 766,437.86 × 300,738.27
  4. Step 4: Simplify right side
    555,387.09x = 230,497,196,078.90
  5. Step 5: Solve for x
    x = 230,497,196,078.90/555,387.09
  6. Step 6: Final answer
    x = 415,020.80

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1.5x scale

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.