Home / 1,289,422.60-1,935,008.70-839,046.40

Finding the Fourth Proportional to 1,289,422.60, 1,935,008.70 and 839,046.40

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Solution

The fourth proportional to 1,289,422.60, 1,935,008.70 and 839,046.40 is: 1,259,138.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,422.60 : 1,935,008.70 = 839,046.40 : x
  2. Step 2: Convert to fraction form
    1,289,422.60/1,935,008.70 = 839,046.40/x
  3. Step 3: Cross multiply
    1,289,422.60x = 1,935,008.70 × 839,046.40
  4. Step 4: Simplify right side
    1,289,422.60x = 1,623,562,083,703.68
  5. Step 5: Solve for x
    x = 1,623,562,083,703.68/1,289,422.60
  6. Step 6: Final answer
    x = 1,259,138.85

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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.