Home / 454,297.40-681,446.10-312,579.80

Finding the Fourth Proportional to 454,297.40, 681,446.10 and 312,579.80

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Solution

The fourth proportional to 454,297.40, 681,446.10 and 312,579.80 is: 468,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,297.40 : 681,446.10 = 312,579.80 : x
  2. Step 2: Convert to fraction form
    454,297.40/681,446.10 = 312,579.80/x
  3. Step 3: Cross multiply
    454,297.40x = 681,446.10 × 312,579.80
  4. Step 4: Simplify right side
    454,297.40x = 213,006,285,648.78
  5. Step 5: Solve for x
    x = 213,006,285,648.78/454,297.40
  6. Step 6: Final answer
    x = 468,869.70

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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.