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Finding the Fourth Proportional to 455,398.85, 682,184.58 and 418,195.55

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Solution

The fourth proportional to 455,398.85, 682,184.58 and 418,195.55 is: 626,454.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,398.85 : 682,184.58 = 418,195.55 : x
  2. Step 2: Convert to fraction form
    455,398.85/682,184.58 = 418,195.55/x
  3. Step 3: Cross multiply
    455,398.85x = 682,184.58 × 418,195.55
  4. Step 4: Simplify right side
    455,398.85x = 285,286,552,223.70
  5. Step 5: Solve for x
    x = 285,286,552,223.70/455,398.85
  6. Step 6: Final answer
    x = 626,454.27

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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.