Home / 1,315,442-1,815,311.58-711,830

Finding the Fourth Proportional to 1,315,442, 1,815,311.58 and 711,830

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Solution

The fourth proportional to 1,315,442, 1,815,311.58 and 711,830 is: 982,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,442 : 1,815,311.58 = 711,830 : x
  2. Step 2: Convert to fraction form
    1,315,442/1,815,311.58 = 711,830/x
  3. Step 3: Cross multiply
    1,315,442x = 1,815,311.58 × 711,830
  4. Step 4: Simplify right side
    1,315,442x = 1,292,193,241,991.40
  5. Step 5: Solve for x
    x = 1,292,193,241,991.40/1,315,442
  6. Step 6: Final answer
    x = 982,326.28

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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.