Home / 1,200,237.77-1,656,479.43-787,121.98

Finding the Fourth Proportional to 1,200,237.77, 1,656,479.43 and 787,121.98

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Solution

The fourth proportional to 1,200,237.77, 1,656,479.43 and 787,121.98 is: 1,086,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,237.77 : 1,656,479.43 = 787,121.98 : x
  2. Step 2: Convert to fraction form
    1,200,237.77/1,656,479.43 = 787,121.98/x
  3. Step 3: Cross multiply
    1,200,237.77x = 1,656,479.43 × 787,121.98
  4. Step 4: Simplify right side
    1,200,237.77x = 1,303,851,364,629.67
  5. Step 5: Solve for x
    x = 1,303,851,364,629.67/1,200,237.77
  6. Step 6: Final answer
    x = 1,086,327.55

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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.