Home / 1,340,238.25-1,849,543.07-728,391.05

Finding the Fourth Proportional to 1,340,238.25, 1,849,543.07 and 728,391.05

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Solution

The fourth proportional to 1,340,238.25, 1,849,543.07 and 728,391.05 is: 1,005,187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,238.25 : 1,849,543.07 = 728,391.05 : x
  2. Step 2: Convert to fraction form
    1,340,238.25/1,849,543.07 = 728,391.05/x
  3. Step 3: Cross multiply
    1,340,238.25x = 1,849,543.07 × 728,391.05
  4. Step 4: Simplify right side
    1,340,238.25x = 1,347,190,609,529.81
  5. Step 5: Solve for x
    x = 1,347,190,609,529.81/1,340,238.25
  6. Step 6: Final answer
    x = 1,005,187.41

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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.