Home / 861,782.22-1,293,263.64-300,816.72

Finding the Fourth Proportional to 861,782.22, 1,293,263.64 and 300,816.72

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Solution

The fourth proportional to 861,782.22, 1,293,263.64 and 300,816.72 is: 451,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,782.22 : 1,293,263.64 = 300,816.72 : x
  2. Step 2: Convert to fraction form
    861,782.22/1,293,263.64 = 300,816.72/x
  3. Step 3: Cross multiply
    861,782.22x = 1,293,263.64 × 300,816.72
  4. Step 4: Simplify right side
    861,782.22x = 389,035,326,280.06
  5. Step 5: Solve for x
    x = 389,035,326,280.06/861,782.22
  6. Step 6: Final answer
    x = 451,431.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.