Home / 1,188,892.69-1,782,964.68-389,988.61

Finding the Fourth Proportional to 1,188,892.69, 1,782,964.68 and 389,988.61

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Solution

The fourth proportional to 1,188,892.69, 1,782,964.68 and 389,988.61 is: 584,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,892.69 : 1,782,964.68 = 389,988.61 : x
  2. Step 2: Convert to fraction form
    1,188,892.69/1,782,964.68 = 389,988.61/x
  3. Step 3: Cross multiply
    1,188,892.69x = 1,782,964.68 × 389,988.61
  4. Step 4: Simplify right side
    1,188,892.69x = 695,335,911,312.43
  5. Step 5: Solve for x
    x = 695,335,911,312.43/1,188,892.69
  6. Step 6: Final answer
    x = 584,860.11

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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.