Home / 918,631.91-1,377,858.82-278,941.27

Finding the Fourth Proportional to 918,631.91, 1,377,858.82 and 278,941.27

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Solution

The fourth proportional to 918,631.91, 1,377,858.82 and 278,941.27 is: 418,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,631.91 : 1,377,858.82 = 278,941.27 : x
  2. Step 2: Convert to fraction form
    918,631.91/1,377,858.82 = 278,941.27/x
  3. Step 3: Cross multiply
    918,631.91x = 1,377,858.82 × 278,941.27
  4. Step 4: Simplify right side
    918,631.91x = 384,341,687,594.50
  5. Step 5: Solve for x
    x = 384,341,687,594.50/918,631.91
  6. Step 6: Final answer
    x = 418,384.87

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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.