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Finding the Fourth Proportional to 486,383.04, 670,880.88 and 422,611.20

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Solution

The fourth proportional to 486,383.04, 670,880.88 and 422,611.20 is: 582,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,383.04 : 670,880.88 = 422,611.20 : x
  2. Step 2: Convert to fraction form
    486,383.04/670,880.88 = 422,611.20/x
  3. Step 3: Cross multiply
    486,383.04x = 670,880.88 × 422,611.20
  4. Step 4: Simplify right side
    486,383.04x = 283,521,773,753.86
  5. Step 5: Solve for x
    x = 283,521,773,753.86/486,383.04
  6. Step 6: Final answer
    x = 582,918.71

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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.