Home / 817,744.62-1,128,487.64-455,160.71

Finding the Fourth Proportional to 817,744.62, 1,128,487.64 and 455,160.71

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Solution

The fourth proportional to 817,744.62, 1,128,487.64 and 455,160.71 is: 628,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,744.62 : 1,128,487.64 = 455,160.71 : x
  2. Step 2: Convert to fraction form
    817,744.62/1,128,487.64 = 455,160.71/x
  3. Step 3: Cross multiply
    817,744.62x = 1,128,487.64 × 455,160.71
  4. Step 4: Simplify right side
    817,744.62x = 513,643,227,530.38
  5. Step 5: Solve for x
    x = 513,643,227,530.38/817,744.62
  6. Step 6: Final answer
    x = 628,121.81

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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.