Home / 815,759.58-1,223,663.49-389,340.33

Finding the Fourth Proportional to 815,759.58, 1,223,663.49 and 389,340.33

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Solution

The fourth proportional to 815,759.58, 1,223,663.49 and 389,340.33 is: 584,022.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,759.58 : 1,223,663.49 = 389,340.33 : x
  2. Step 2: Convert to fraction form
    815,759.58/1,223,663.49 = 389,340.33/x
  3. Step 3: Cross multiply
    815,759.58x = 1,223,663.49 × 389,340.33
  4. Step 4: Simplify right side
    815,759.58x = 476,421,547,005.55
  5. Step 5: Solve for x
    x = 476,421,547,005.55/815,759.58
  6. Step 6: Final answer
    x = 584,022.01

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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.