Home / 486,172.20-670,900.14-304,981.68

Finding the Fourth Proportional to 486,172.20, 670,900.14 and 304,981.68

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Solution

The fourth proportional to 486,172.20, 670,900.14 and 304,981.68 is: 420,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,172.20 : 670,900.14 = 304,981.68 : x
  2. Step 2: Convert to fraction form
    486,172.20/670,900.14 = 304,981.68/x
  3. Step 3: Cross multiply
    486,172.20x = 670,900.14 × 304,981.68
  4. Step 4: Simplify right side
    486,172.20x = 204,612,251,809.44
  5. Step 5: Solve for x
    x = 204,612,251,809.44/486,172.20
  6. Step 6: Final answer
    x = 420,863.74

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1.5x scale

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.