Home / 1,231,394.50-1,699,308.31-687,539.55

Finding the Fourth Proportional to 1,231,394.50, 1,699,308.31 and 687,539.55

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Solution

The fourth proportional to 1,231,394.50, 1,699,308.31 and 687,539.55 is: 948,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,394.50 : 1,699,308.31 = 687,539.55 : x
  2. Step 2: Convert to fraction form
    1,231,394.50/1,699,308.31 = 687,539.55/x
  3. Step 3: Cross multiply
    1,231,394.50x = 1,699,308.31 × 687,539.55
  4. Step 4: Simplify right side
    1,231,394.50x = 1,168,341,670,768.66
  5. Step 5: Solve for x
    x = 1,168,341,670,768.66/1,231,394.50
  6. Step 6: Final answer
    x = 948,795.59

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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.