Home / 715,909.06-987,973.21-389,244.04

Finding the Fourth Proportional to 715,909.06, 987,973.21 and 389,244.04

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Solution

The fourth proportional to 715,909.06, 987,973.21 and 389,244.04 is: 537,166.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,909.06 : 987,973.21 = 389,244.04 : x
  2. Step 2: Convert to fraction form
    715,909.06/987,973.21 = 389,244.04/x
  3. Step 3: Cross multiply
    715,909.06x = 987,973.21 × 389,244.04
  4. Step 4: Simplify right side
    715,909.06x = 384,562,682,699.06
  5. Step 5: Solve for x
    x = 384,562,682,699.06/715,909.06
  6. Step 6: Final answer
    x = 537,166.95

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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.