Home / 455,940,868.87-683,966,646.75-128,416,382.42

Finding the Fourth Proportional to 455,940,868.87, 683,966,646.75 and 128,416,382.42

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Solution

The fourth proportional to 455,940,868.87, 683,966,646.75 and 128,416,382.42 is: 192,640,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,940,868.87 : 683,966,646.75 = 128,416,382.42 : x
  2. Step 2: Convert to fraction form
    455,940,868.87/683,966,646.75 = 128,416,382.42/x
  3. Step 3: Cross multiply
    455,940,868.87x = 683,966,646.75 × 128,416,382.42
  4. Step 4: Simplify right side
    455,940,868.87x = 87,832,522,471,573,056
  5. Step 5: Solve for x
    x = 87,832,522,471,573,056/455,940,868.87
  6. Step 6: Final answer
    x = 192,640,161.19

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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.