Home / 811,523.96-1,217,048-305,720

Finding the Fourth Proportional to 811,523.96, 1,217,048 and 305,720

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Solution

The fourth proportional to 811,523.96, 1,217,048 and 305,720 is: 458,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,523.96 : 1,217,048 = 305,720 : x
  2. Step 2: Convert to fraction form
    811,523.96/1,217,048 = 305,720/x
  3. Step 3: Cross multiply
    811,523.96x = 1,217,048 × 305,720
  4. Step 4: Simplify right side
    811,523.96x = 372,075,914,560
  5. Step 5: Solve for x
    x = 372,075,914,560/811,523.96
  6. Step 6: Final answer
    x = 458,490.36

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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.