Home / 513,021.08-707,969.24-280,449.03

Finding the Fourth Proportional to 513,021.08, 707,969.24 and 280,449.03

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Solution

The fourth proportional to 513,021.08, 707,969.24 and 280,449.03 is: 387,019.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,021.08 : 707,969.24 = 280,449.03 : x
  2. Step 2: Convert to fraction form
    513,021.08/707,969.24 = 280,449.03/x
  3. Step 3: Cross multiply
    513,021.08x = 707,969.24 × 280,449.03
  4. Step 4: Simplify right side
    513,021.08x = 198,549,283,087.99
  5. Step 5: Solve for x
    x = 198,549,283,087.99/513,021.08
  6. Step 6: Final answer
    x = 387,019.74

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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.