Home / 819,621.12-1,229,650.56-258,666.24

Finding the Fourth Proportional to 819,621.12, 1,229,650.56 and 258,666.24

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Solution

The fourth proportional to 819,621.12, 1,229,650.56 and 258,666.24 is: 388,068.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,621.12 : 1,229,650.56 = 258,666.24 : x
  2. Step 2: Convert to fraction form
    819,621.12/1,229,650.56 = 258,666.24/x
  3. Step 3: Cross multiply
    819,621.12x = 1,229,650.56 × 258,666.24
  4. Step 4: Simplify right side
    819,621.12x = 318,069,086,869.09
  5. Step 5: Solve for x
    x = 318,069,086,869.09/819,621.12
  6. Step 6: Final answer
    x = 388,068.44

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1.5x scale

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.