Home / 486,384.04-670,882.26-422,612.20

Finding the Fourth Proportional to 486,384.04, 670,882.26 and 422,612.20

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Solution

The fourth proportional to 486,384.04, 670,882.26 and 422,612.20 is: 582,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,384.04 : 670,882.26 = 422,612.20 : x
  2. Step 2: Convert to fraction form
    486,384.04/670,882.26 = 422,612.20/x
  3. Step 3: Cross multiply
    486,384.04x = 670,882.26 × 422,612.20
  4. Step 4: Simplify right side
    486,384.04x = 283,523,027,839.57
  5. Step 5: Solve for x
    x = 283,523,027,839.57/486,384.04
  6. Step 6: Final answer
    x = 582,920.09

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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.