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Finding the Fourth Proportional to 456,003.70, 684,005.55 and 123,579.70

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Solution

The fourth proportional to 456,003.70, 684,005.55 and 123,579.70 is: 185,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,003.70 : 684,005.55 = 123,579.70 : x
  2. Step 2: Convert to fraction form
    456,003.70/684,005.55 = 123,579.70/x
  3. Step 3: Cross multiply
    456,003.70x = 684,005.55 × 123,579.70
  4. Step 4: Simplify right side
    456,003.70x = 84,529,200,667.34
  5. Step 5: Solve for x
    x = 84,529,200,667.34/456,003.70
  6. Step 6: Final answer
    x = 185,369.55

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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.