Home / 1,231,977.76-1,700,111.39-688,121.28

Finding the Fourth Proportional to 1,231,977.76, 1,700,111.39 and 688,121.28

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Solution

The fourth proportional to 1,231,977.76, 1,700,111.39 and 688,121.28 is: 949,597.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,977.76 : 1,700,111.39 = 688,121.28 : x
  2. Step 2: Convert to fraction form
    1,231,977.76/1,700,111.39 = 688,121.28/x
  3. Step 3: Cross multiply
    1,231,977.76x = 1,700,111.39 × 688,121.28
  4. Step 4: Simplify right side
    1,231,977.76x = 1,169,882,822,388.77
  5. Step 5: Solve for x
    x = 1,169,882,822,388.77/1,231,977.76
  6. Step 6: Final answer
    x = 949,597.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.