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Finding the Fourth Proportional to 455,920.13, 683,880.20 and 123,496.13

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Solution

The fourth proportional to 455,920.13, 683,880.20 and 123,496.13 is: 185,244.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,920.13 : 683,880.20 = 123,496.13 : x
  2. Step 2: Convert to fraction form
    455,920.13/683,880.20 = 123,496.13/x
  3. Step 3: Cross multiply
    455,920.13x = 683,880.20 × 123,496.13
  4. Step 4: Simplify right side
    455,920.13x = 84,456,554,046.74
  5. Step 5: Solve for x
    x = 84,456,554,046.74/455,920.13
  6. Step 6: Final answer
    x = 185,244.19

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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.