Home / 1,188,320.74-1,639,871.46-644,468.54

Finding the Fourth Proportional to 1,188,320.74, 1,639,871.46 and 644,468.54

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Solution

The fourth proportional to 1,188,320.74, 1,639,871.46 and 644,468.54 is: 889,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,320.74 : 1,639,871.46 = 644,468.54 : x
  2. Step 2: Convert to fraction form
    1,188,320.74/1,639,871.46 = 644,468.54/x
  3. Step 3: Cross multiply
    1,188,320.74x = 1,639,871.46 × 644,468.54
  4. Step 4: Simplify right side
    1,188,320.74x = 1,056,845,565,613.87
  5. Step 5: Solve for x
    x = 1,056,845,565,613.87/1,188,320.74
  6. Step 6: Final answer
    x = 889,360.53

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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.