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Finding the Fourth Proportional to 456,446.20, 684,669.30 and 456,446.20

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Solution

The fourth proportional to 456,446.20, 684,669.30 and 456,446.20 is: 684,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,446.20 : 684,669.30 = 456,446.20 : x
  2. Step 2: Convert to fraction form
    456,446.20/684,669.30 = 456,446.20/x
  3. Step 3: Cross multiply
    456,446.20x = 684,669.30 × 456,446.20
  4. Step 4: Simplify right side
    456,446.20x = 312,514,700,241.66
  5. Step 5: Solve for x
    x = 312,514,700,241.66/456,446.20
  6. Step 6: Final answer
    x = 684,669.30

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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.