Home / 1,989,696.70-2,985,126.23-641,829.39

Finding the Fourth Proportional to 1,989,696.70, 2,985,126.23 and 641,829.39

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Solution

The fourth proportional to 1,989,696.70, 2,985,126.23 and 641,829.39 is: 962,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,696.70 : 2,985,126.23 = 641,829.39 : x
  2. Step 2: Convert to fraction form
    1,989,696.70/2,985,126.23 = 641,829.39/x
  3. Step 3: Cross multiply
    1,989,696.70x = 2,985,126.23 × 641,829.39
  4. Step 4: Simplify right side
    1,989,696.70x = 1,915,941,747,273.90
  5. Step 5: Solve for x
    x = 1,915,941,747,273.90/1,989,696.70
  6. Step 6: Final answer
    x = 962,931.56

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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.