Home / 918,645.26-1,377,878.78-278,954.53

Finding the Fourth Proportional to 918,645.26, 1,377,878.78 and 278,954.53

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Solution

The fourth proportional to 918,645.26, 1,377,878.78 and 278,954.53 is: 418,404.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,645.26 : 1,377,878.78 = 278,954.53 : x
  2. Step 2: Convert to fraction form
    918,645.26/1,377,878.78 = 278,954.53/x
  3. Step 3: Cross multiply
    918,645.26x = 1,377,878.78 × 278,954.53
  4. Step 4: Simplify right side
    918,645.26x = 384,365,528,169.26
  5. Step 5: Solve for x
    x = 384,365,528,169.26/918,645.26
  6. Step 6: Final answer
    x = 418,404.74

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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.