Home / 859,809.35-1,289,742.71-386,496.11

Finding the Fourth Proportional to 859,809.35, 1,289,742.71 and 386,496.11

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Solution

The fourth proportional to 859,809.35, 1,289,742.71 and 386,496.11 is: 579,757.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,809.35 : 1,289,742.71 = 386,496.11 : x
  2. Step 2: Convert to fraction form
    859,809.35/1,289,742.71 = 386,496.11/x
  3. Step 3: Cross multiply
    859,809.35x = 1,289,742.71 × 386,496.11
  4. Step 4: Simplify right side
    859,809.35x = 498,480,531,934.66
  5. Step 5: Solve for x
    x = 498,480,531,934.66/859,809.35
  6. Step 6: Final answer
    x = 579,757.05

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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.