Home / 815,775.58-1,223,687.50-389,356.34

Finding the Fourth Proportional to 815,775.58, 1,223,687.50 and 389,356.34

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Solution

The fourth proportional to 815,775.58, 1,223,687.50 and 389,356.34 is: 584,046.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,775.58 : 1,223,687.50 = 389,356.34 : x
  2. Step 2: Convert to fraction form
    815,775.58/1,223,687.50 = 389,356.34/x
  3. Step 3: Cross multiply
    815,775.58x = 1,223,687.50 × 389,356.34
  4. Step 4: Simplify right side
    815,775.58x = 476,450,486,303.75
  5. Step 5: Solve for x
    x = 476,450,486,303.75/815,775.58
  6. Step 6: Final answer
    x = 584,046.03

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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.