Home / 1,280,912.49-1,767,750.78-707,940.36

Finding the Fourth Proportional to 1,280,912.49, 1,767,750.78 and 707,940.36

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Solution

The fourth proportional to 1,280,912.49, 1,767,750.78 and 707,940.36 is: 977,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,912.49 : 1,767,750.78 = 707,940.36 : x
  2. Step 2: Convert to fraction form
    1,280,912.49/1,767,750.78 = 707,940.36/x
  3. Step 3: Cross multiply
    1,280,912.49x = 1,767,750.78 × 707,940.36
  4. Step 4: Simplify right side
    1,280,912.49x = 1,251,462,123,583.48
  5. Step 5: Solve for x
    x = 1,251,462,123,583.48/1,280,912.49
  6. Step 6: Final answer
    x = 977,008.29

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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.