Home / 777,607.29-1,073,120.81-455,287.23

Finding the Fourth Proportional to 777,607.29, 1,073,120.81 and 455,287.23

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Solution

The fourth proportional to 777,607.29, 1,073,120.81 and 455,287.23 is: 628,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,607.29 : 1,073,120.81 = 455,287.23 : x
  2. Step 2: Convert to fraction form
    777,607.29/1,073,120.81 = 455,287.23/x
  3. Step 3: Cross multiply
    777,607.29x = 1,073,120.81 × 455,287.23
  4. Step 4: Simplify right side
    777,607.29x = 488,578,198,763.82
  5. Step 5: Solve for x
    x = 488,578,198,763.82/777,607.29
  6. Step 6: Final answer
    x = 628,309.69

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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.