Home / 1,390,960.58-2,086,839.38-681,196.46

Finding the Fourth Proportional to 1,390,960.58, 2,086,839.38 and 681,196.46

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Solution

The fourth proportional to 1,390,960.58, 2,086,839.38 and 681,196.46 is: 1,021,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,960.58 : 2,086,839.38 = 681,196.46 : x
  2. Step 2: Convert to fraction form
    1,390,960.58/2,086,839.38 = 681,196.46/x
  3. Step 3: Cross multiply
    1,390,960.58x = 2,086,839.38 × 681,196.46
  4. Step 4: Simplify right side
    1,390,960.58x = 1,421,547,598,244.59
  5. Step 5: Solve for x
    x = 1,421,547,598,244.59/1,390,960.58
  6. Step 6: Final answer
    x = 1,021,989.85

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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.