Home / 1,139,719.40-1,709,732.70-391,994.60

Finding the Fourth Proportional to 1,139,719.40, 1,709,732.70 and 391,994.60

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Solution

The fourth proportional to 1,139,719.40, 1,709,732.70 and 391,994.60 is: 588,044.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,719.40 : 1,709,732.70 = 391,994.60 : x
  2. Step 2: Convert to fraction form
    1,139,719.40/1,709,732.70 = 391,994.60/x
  3. Step 3: Cross multiply
    1,139,719.40x = 1,709,732.70 × 391,994.60
  4. Step 4: Simplify right side
    1,139,719.40x = 670,205,985,843.42
  5. Step 5: Solve for x
    x = 670,205,985,843.42/1,139,719.40
  6. Step 6: Final answer
    x = 588,044.73

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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.