Home / 1,428,476.41-1,971,354.31-783,919.67

Finding the Fourth Proportional to 1,428,476.41, 1,971,354.31 and 783,919.67

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Solution

The fourth proportional to 1,428,476.41, 1,971,354.31 and 783,919.67 is: 1,081,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,476.41 : 1,971,354.31 = 783,919.67 : x
  2. Step 2: Convert to fraction form
    1,428,476.41/1,971,354.31 = 783,919.67/x
  3. Step 3: Cross multiply
    1,428,476.41x = 1,971,354.31 × 783,919.67
  4. Step 4: Simplify right side
    1,428,476.41x = 1,545,383,419,420.58
  5. Step 5: Solve for x
    x = 1,545,383,419,420.58/1,428,476.41
  6. Step 6: Final answer
    x = 1,081,840.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.