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Finding the Fourth Proportional to 456,220.40, 684,330.60 and 123,796.40

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Solution

The fourth proportional to 456,220.40, 684,330.60 and 123,796.40 is: 185,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,220.40 : 684,330.60 = 123,796.40 : x
  2. Step 2: Convert to fraction form
    456,220.40/684,330.60 = 123,796.40/x
  3. Step 3: Cross multiply
    456,220.40x = 684,330.60 × 123,796.40
  4. Step 4: Simplify right side
    456,220.40x = 84,717,664,689.84
  5. Step 5: Solve for x
    x = 84,717,664,689.84/456,220.40
  6. Step 6: Final answer
    x = 185,694.60

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Similar ratio
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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.