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Finding the Fourth Proportional to 455,920.05, 683,880.08 and 123,496.05

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Solution

The fourth proportional to 455,920.05, 683,880.08 and 123,496.05 is: 185,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,920.05 : 683,880.08 = 123,496.05 : x
  2. Step 2: Convert to fraction form
    455,920.05/683,880.08 = 123,496.05/x
  3. Step 3: Cross multiply
    455,920.05x = 683,880.08 × 123,496.05
  4. Step 4: Simplify right side
    455,920.05x = 84,456,487,936.20
  5. Step 5: Solve for x
    x = 84,456,487,936.20/455,920.05
  6. Step 6: Final answer
    x = 185,244.08

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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.