Home / 751,806.98-1,128,672.79-645,868.70

Finding the Fourth Proportional to 751,806.98, 1,128,672.79 and 645,868.70

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Solution

The fourth proportional to 751,806.98, 1,128,672.79 and 645,868.70 is: 969,629.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,806.98 : 1,128,672.79 = 645,868.70 : x
  2. Step 2: Convert to fraction form
    751,806.98/1,128,672.79 = 645,868.70/x
  3. Step 3: Cross multiply
    751,806.98x = 1,128,672.79 × 645,868.70
  4. Step 4: Simplify right side
    751,806.98x = 728,974,427,602.67
  5. Step 5: Solve for x
    x = 728,974,427,602.67/751,806.98
  6. Step 6: Final answer
    x = 969,629.77

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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.