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Finding the Fourth Proportional to 555,910.20, 767,238.35 and 351,980.04

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Solution

The fourth proportional to 555,910.20, 767,238.35 and 351,980.04 is: 485,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,910.20 : 767,238.35 = 351,980.04 : x
  2. Step 2: Convert to fraction form
    555,910.20/767,238.35 = 351,980.04/x
  3. Step 3: Cross multiply
    555,910.20x = 767,238.35 × 351,980.04
  4. Step 4: Simplify right side
    555,910.20x = 270,052,587,051.75
  5. Step 5: Solve for x
    x = 270,052,587,051.75/555,910.20
  6. Step 6: Final answer
    x = 485,784.55

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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.