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Finding the Fourth Proportional to 555,906.81, 767,233.69 and 351,976.69

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Solution

The fourth proportional to 555,906.81, 767,233.69 and 351,976.69 is: 485,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,906.81 : 767,233.69 = 351,976.69 : x
  2. Step 2: Convert to fraction form
    555,906.81/767,233.69 = 351,976.69/x
  3. Step 3: Cross multiply
    555,906.81x = 767,233.69 × 351,976.69
  4. Step 4: Simplify right side
    555,906.81x = 270,048,374,741.79
  5. Step 5: Solve for x
    x = 270,048,374,741.79/555,906.81
  6. Step 6: Final answer
    x = 485,779.93

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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.