Home / 916,900.20-1,375,367.28-317,880.88

Finding the Fourth Proportional to 916,900.20, 1,375,367.28 and 317,880.88

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Solution

The fourth proportional to 916,900.20, 1,375,367.28 and 317,880.88 is: 476,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,900.20 : 1,375,367.28 = 317,880.88 : x
  2. Step 2: Convert to fraction form
    916,900.20/1,375,367.28 = 317,880.88/x
  3. Step 3: Cross multiply
    916,900.20x = 1,375,367.28 × 317,880.88
  4. Step 4: Simplify right side
    916,900.20x = 437,202,961,289.61
  5. Step 5: Solve for x
    x = 437,202,961,289.61/916,900.20
  6. Step 6: Final answer
    x = 476,827.21

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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.