Home / 1,231,883.12-1,699,830.71-687,949.55

Finding the Fourth Proportional to 1,231,883.12, 1,699,830.71 and 687,949.55

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Solution

The fourth proportional to 1,231,883.12, 1,699,830.71 and 687,949.55 is: 949,276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,883.12 : 1,699,830.71 = 687,949.55 : x
  2. Step 2: Convert to fraction form
    1,231,883.12/1,699,830.71 = 687,949.55/x
  3. Step 3: Cross multiply
    1,231,883.12x = 1,699,830.71 × 687,949.55
  4. Step 4: Simplify right side
    1,231,883.12x = 1,169,397,772,830.51
  5. Step 5: Solve for x
    x = 1,169,397,772,830.51/1,231,883.12
  6. Step 6: Final answer
    x = 949,276.57

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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.