Home / 1,389,012.60-2,083,634.10-442,356.60

Finding the Fourth Proportional to 1,389,012.60, 2,083,634.10 and 442,356.60

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Solution

The fourth proportional to 1,389,012.60, 2,083,634.10 and 442,356.60 is: 663,571.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,012.60 : 2,083,634.10 = 442,356.60 : x
  2. Step 2: Convert to fraction form
    1,389,012.60/2,083,634.10 = 442,356.60/x
  3. Step 3: Cross multiply
    1,389,012.60x = 2,083,634.10 × 442,356.60
  4. Step 4: Simplify right side
    1,389,012.60x = 921,709,296,120.06
  5. Step 5: Solve for x
    x = 921,709,296,120.06/1,389,012.60
  6. Step 6: Final answer
    x = 663,571.59

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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.