Home / 817,757.98-1,128,480.89-455,172.51

Finding the Fourth Proportional to 817,757.98, 1,128,480.89 and 455,172.51

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Solution

The fourth proportional to 817,757.98, 1,128,480.89 and 455,172.51 is: 628,124.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,757.98 : 1,128,480.89 = 455,172.51 : x
  2. Step 2: Convert to fraction form
    817,757.98/1,128,480.89 = 455,172.51/x
  3. Step 3: Cross multiply
    817,757.98x = 1,128,480.89 × 455,172.51
  4. Step 4: Simplify right side
    817,757.98x = 513,653,482,424.45
  5. Step 5: Solve for x
    x = 513,653,482,424.45/817,757.98
  6. Step 6: Final answer
    x = 628,124.09

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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.