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Finding the Fourth Proportional to 1,223,542.90, 1,835,314.35 and 845,629.30

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Solution

The fourth proportional to 1,223,542.90, 1,835,314.35 and 845,629.30 is: 1,268,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,542.90 : 1,835,314.35 = 845,629.30 : x
  2. Step 2: Convert to fraction form
    1,223,542.90/1,835,314.35 = 845,629.30/x
  3. Step 3: Cross multiply
    1,223,542.90x = 1,835,314.35 × 845,629.30
  4. Step 4: Simplify right side
    1,223,542.90x = 1,551,995,589,070.46
  5. Step 5: Solve for x
    x = 1,551,995,589,070.46/1,223,542.90
  6. Step 6: Final answer
    x = 1,268,443.95

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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.