Home / 817,743.51-1,128,486.11-455,159.57

Finding the Fourth Proportional to 817,743.51, 1,128,486.11 and 455,159.57

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Solution

The fourth proportional to 817,743.51, 1,128,486.11 and 455,159.57 is: 628,120.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,743.51 : 1,128,486.11 = 455,159.57 : x
  2. Step 2: Convert to fraction form
    817,743.51/1,128,486.11 = 455,159.57/x
  3. Step 3: Cross multiply
    817,743.51x = 1,128,486.11 × 455,159.57
  4. Step 4: Simplify right side
    817,743.51x = 513,641,244,660.34
  5. Step 5: Solve for x
    x = 513,641,244,660.34/817,743.51
  6. Step 6: Final answer
    x = 628,120.23

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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.