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Finding the Fourth Proportional to 554,755.90, 765,560.55 and 300,104.86

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Solution

The fourth proportional to 554,755.90, 765,560.55 and 300,104.86 is: 414,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,755.90 : 765,560.55 = 300,104.86 : x
  2. Step 2: Convert to fraction form
    554,755.90/765,560.55 = 300,104.86/x
  3. Step 3: Cross multiply
    554,755.90x = 765,560.55 × 300,104.86
  4. Step 4: Simplify right side
    554,755.90x = 229,748,441,679.27
  5. Step 5: Solve for x
    x = 229,748,441,679.27/554,755.90
  6. Step 6: Final answer
    x = 414,143.30

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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.