Home / 918,645.15-1,377,878.63-278,954.43

Finding the Fourth Proportional to 918,645.15, 1,377,878.63 and 278,954.43

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Solution

The fourth proportional to 918,645.15, 1,377,878.63 and 278,954.43 is: 418,404.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,645.15 : 1,377,878.63 = 278,954.43 : x
  2. Step 2: Convert to fraction form
    918,645.15/1,377,878.63 = 278,954.43/x
  3. Step 3: Cross multiply
    918,645.15x = 1,377,878.63 × 278,954.43
  4. Step 4: Simplify right side
    918,645.15x = 384,365,340,951.44
  5. Step 5: Solve for x
    x = 384,365,340,951.44/918,645.15
  6. Step 6: Final answer
    x = 418,404.58

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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.