Home / 815,783.75-1,125,813.29-558,200.71

Finding the Fourth Proportional to 815,783.75, 1,125,813.29 and 558,200.71

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Solution

The fourth proportional to 815,783.75, 1,125,813.29 and 558,200.71 is: 770,338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,783.75 : 1,125,813.29 = 558,200.71 : x
  2. Step 2: Convert to fraction form
    815,783.75/1,125,813.29 = 558,200.71/x
  3. Step 3: Cross multiply
    815,783.75x = 1,125,813.29 × 558,200.71
  4. Step 4: Simplify right side
    815,783.75x = 628,429,772,199.90
  5. Step 5: Solve for x
    x = 628,429,772,199.90/815,783.75
  6. Step 6: Final answer
    x = 770,338.68

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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.