Home / 1,315,440-1,815,308.82-711,828

Finding the Fourth Proportional to 1,315,440, 1,815,308.82 and 711,828

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Solution

The fourth proportional to 1,315,440, 1,815,308.82 and 711,828 is: 982,323.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,440 : 1,815,308.82 = 711,828 : x
  2. Step 2: Convert to fraction form
    1,315,440/1,815,308.82 = 711,828/x
  3. Step 3: Cross multiply
    1,315,440x = 1,815,308.82 × 711,828
  4. Step 4: Simplify right side
    1,315,440x = 1,292,187,646,722.96
  5. Step 5: Solve for x
    x = 1,292,187,646,722.96/1,315,440
  6. Step 6: Final answer
    x = 982,323.52

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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.