Home / 879,006.09-1,325,097.38-820,415.85

Finding the Fourth Proportional to 879,006.09, 1,325,097.38 and 820,415.85

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Solution

The fourth proportional to 879,006.09, 1,325,097.38 and 820,415.85 is: 1,236,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,006.09 : 1,325,097.38 = 820,415.85 : x
  2. Step 2: Convert to fraction form
    879,006.09/1,325,097.38 = 820,415.85/x
  3. Step 3: Cross multiply
    879,006.09x = 1,325,097.38 × 820,415.85
  4. Step 4: Simplify right side
    879,006.09x = 1,087,130,889,243.39
  5. Step 5: Solve for x
    x = 1,087,130,889,243.39/879,006.09
  6. Step 6: Final answer
    x = 1,236,772.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.