Home / 1,287,421.32-1,776,230.42-743,485.26

Finding the Fourth Proportional to 1,287,421.32, 1,776,230.42 and 743,485.26

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Solution

The fourth proportional to 1,287,421.32, 1,776,230.42 and 743,485.26 is: 1,025,772.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,421.32 : 1,776,230.42 = 743,485.26 : x
  2. Step 2: Convert to fraction form
    1,287,421.32/1,776,230.42 = 743,485.26/x
  3. Step 3: Cross multiply
    1,287,421.32x = 1,776,230.42 × 743,485.26
  4. Step 4: Simplify right side
    1,287,421.32x = 1,320,601,135,633.61
  5. Step 5: Solve for x
    x = 1,320,601,135,633.61/1,287,421.32
  6. Step 6: Final answer
    x = 1,025,772.31

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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.