Home / 817,790.41-1,128,587.97-455,237.26

Finding the Fourth Proportional to 817,790.41, 1,128,587.97 and 455,237.26

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Solution

The fourth proportional to 817,790.41, 1,128,587.97 and 455,237.26 is: 628,248.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,790.41 : 1,128,587.97 = 455,237.26 : x
  2. Step 2: Convert to fraction form
    817,790.41/1,128,587.97 = 455,237.26/x
  3. Step 3: Cross multiply
    817,790.41x = 1,128,587.97 × 455,237.26
  4. Step 4: Simplify right side
    817,790.41x = 513,775,295,131.76
  5. Step 5: Solve for x
    x = 513,775,295,131.76/817,790.41
  6. Step 6: Final answer
    x = 628,248.13

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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.