Home / 918,222-1,377,336.20-278,531.25

Finding the Fourth Proportional to 918,222, 1,377,336.20 and 278,531.25

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Solution

The fourth proportional to 918,222, 1,377,336.20 and 278,531.25 is: 417,797.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,222 : 1,377,336.20 = 278,531.25 : x
  2. Step 2: Convert to fraction form
    918,222/1,377,336.20 = 278,531.25/x
  3. Step 3: Cross multiply
    918,222x = 1,377,336.20 × 278,531.25
  4. Step 4: Simplify right side
    918,222x = 383,631,174,152.58
  5. Step 5: Solve for x
    x = 383,631,174,152.58/918,222
  6. Step 6: Final answer
    x = 417,797.85

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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.