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Finding the Fourth Proportional to 617,920.80, 925,714.80 and 317,378.40

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Solution

The fourth proportional to 617,920.80, 925,714.80 and 317,378.40 is: 475,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,920.80 : 925,714.80 = 317,378.40 : x
  2. Step 2: Convert to fraction form
    617,920.80/925,714.80 = 317,378.40/x
  3. Step 3: Cross multiply
    617,920.80x = 925,714.80 × 317,378.40
  4. Step 4: Simplify right side
    617,920.80x = 293,801,882,080.32
  5. Step 5: Solve for x
    x = 293,801,882,080.32/617,920.80
  6. Step 6: Final answer
    x = 475,468.51

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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.