Home / 815,841.84-1,223,416.76-388,883.73

Finding the Fourth Proportional to 815,841.84, 1,223,416.76 and 388,883.73

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Solution

The fourth proportional to 815,841.84, 1,223,416.76 and 388,883.73 is: 583,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,841.84 : 1,223,416.76 = 388,883.73 : x
  2. Step 2: Convert to fraction form
    815,841.84/1,223,416.76 = 388,883.73/x
  3. Step 3: Cross multiply
    815,841.84x = 1,223,416.76 × 388,883.73
  4. Step 4: Simplify right side
    815,841.84x = 475,766,879,315.71
  5. Step 5: Solve for x
    x = 475,766,879,315.71/815,841.84
  6. Step 6: Final answer
    x = 583,160.68

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1.5x scale

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.