Home / 918,647.50-1,377,882.15-278,956.78

Finding the Fourth Proportional to 918,647.50, 1,377,882.15 and 278,956.78

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Solution

The fourth proportional to 918,647.50, 1,377,882.15 and 278,956.78 is: 418,408.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,647.50 : 1,377,882.15 = 278,956.78 : x
  2. Step 2: Convert to fraction form
    918,647.50/1,377,882.15 = 278,956.78/x
  3. Step 3: Cross multiply
    918,647.50x = 1,377,882.15 × 278,956.78
  4. Step 4: Simplify right side
    918,647.50x = 384,369,567,783.48
  5. Step 5: Solve for x
    x = 384,369,567,783.48/918,647.50
  6. Step 6: Final answer
    x = 418,408.11

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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.