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Finding the Fourth Proportional to 555,909.89, 767,237.94 and 351,979.79

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Solution

The fourth proportional to 555,909.89, 767,237.94 and 351,979.79 is: 485,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,909.89 : 767,237.94 = 351,979.79 : x
  2. Step 2: Convert to fraction form
    555,909.89/767,237.94 = 351,979.79/x
  3. Step 3: Cross multiply
    555,909.89x = 767,237.94 × 351,979.79
  4. Step 4: Simplify right side
    555,909.89x = 270,052,245,165.04
  5. Step 5: Solve for x
    x = 270,052,245,165.04/555,909.89
  6. Step 6: Final answer
    x = 485,784.21

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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.