Home / 916,756.25-1,375,378.94-317,716.91

Finding the Fourth Proportional to 916,756.25, 1,375,378.94 and 317,716.91

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Solution

The fourth proportional to 916,756.25, 1,375,378.94 and 317,716.91 is: 476,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,756.25 : 1,375,378.94 = 317,716.91 : x
  2. Step 2: Convert to fraction form
    916,756.25/1,375,378.94 = 317,716.91/x
  3. Step 3: Cross multiply
    916,756.25x = 1,375,378.94 × 317,716.91
  4. Step 4: Simplify right side
    916,756.25x = 436,981,140,315.53
  5. Step 5: Solve for x
    x = 436,981,140,315.53/916,756.25
  6. Step 6: Final answer
    x = 476,660.11

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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.