Home / 455,319.40-628,423.04-271,569.76

Finding the Fourth Proportional to 455,319.40, 628,423.04 and 271,569.76

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Solution

The fourth proportional to 455,319.40, 628,423.04 and 271,569.76 is: 374,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,319.40 : 628,423.04 = 271,569.76 : x
  2. Step 2: Convert to fraction form
    455,319.40/628,423.04 = 271,569.76/x
  3. Step 3: Cross multiply
    455,319.40x = 628,423.04 × 271,569.76
  4. Step 4: Simplify right side
    455,319.40x = 170,660,694,151.27
  5. Step 5: Solve for x
    x = 170,660,694,151.27/455,319.40
  6. Step 6: Final answer
    x = 374,815.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.