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Finding the Fourth Proportional to 456,650.70, 684,976.05 and 279,066.30

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Solution

The fourth proportional to 456,650.70, 684,976.05 and 279,066.30 is: 418,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,650.70 : 684,976.05 = 279,066.30 : x
  2. Step 2: Convert to fraction form
    456,650.70/684,976.05 = 279,066.30/x
  3. Step 3: Cross multiply
    456,650.70x = 684,976.05 × 279,066.30
  4. Step 4: Simplify right side
    456,650.70x = 191,153,731,862.12
  5. Step 5: Solve for x
    x = 191,153,731,862.12/456,650.70
  6. Step 6: Final answer
    x = 418,599.45

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Double scale
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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.