Home / 839,856.74-1,259,194.44-390,100.10

Finding the Fourth Proportional to 839,856.74, 1,259,194.44 and 390,100.10

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Solution

The fourth proportional to 839,856.74, 1,259,194.44 and 390,100.10 is: 584,875.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,856.74 : 1,259,194.44 = 390,100.10 : x
  2. Step 2: Convert to fraction form
    839,856.74/1,259,194.44 = 390,100.10/x
  3. Step 3: Cross multiply
    839,856.74x = 1,259,194.44 × 390,100.10
  4. Step 4: Simplify right side
    839,856.74x = 491,211,876,963.44
  5. Step 5: Solve for x
    x = 491,211,876,963.44/839,856.74
  6. Step 6: Final answer
    x = 584,875.79

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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.