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Finding the Fourth Proportional to 555,046.85, 765,966.89 and 300,397.97

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Solution

The fourth proportional to 555,046.85, 765,966.89 and 300,397.97 is: 414,550.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,046.85 : 765,966.89 = 300,397.97 : x
  2. Step 2: Convert to fraction form
    555,046.85/765,966.89 = 300,397.97/x
  3. Step 3: Cross multiply
    555,046.85x = 765,966.89 × 300,397.97
  4. Step 4: Simplify right side
    555,046.85x = 230,094,895,764.37
  5. Step 5: Solve for x
    x = 230,094,895,764.37/555,046.85
  6. Step 6: Final answer
    x = 414,550.41

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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.