Home / 855,914,815.50-1,284,311,510.64-407,725,771.20

Finding the Fourth Proportional to 855,914,815.50, 1,284,311,510.64 and 407,725,771.20

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Solution

The fourth proportional to 855,914,815.50, 1,284,311,510.64 and 407,725,771.20 is: 611,797,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,914,815.50 : 1,284,311,510.64 = 407,725,771.20 : x
  2. Step 2: Convert to fraction form
    855,914,815.50/1,284,311,510.64 = 407,725,771.20/x
  3. Step 3: Cross multiply
    855,914,815.50x = 1,284,311,510.64 × 407,725,771.20
  4. Step 4: Simplify right side
    855,914,815.50x = 523,646,901,136,731,008
  5. Step 5: Solve for x
    x = 523,646,901,136,731,008/855,914,815.50
  6. Step 6: Final answer
    x = 611,797,916.86

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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.