Home / 817,729.66-1,128,458.31-455,147.74

Finding the Fourth Proportional to 817,729.66, 1,128,458.31 and 455,147.74

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Solution

The fourth proportional to 817,729.66, 1,128,458.31 and 455,147.74 is: 628,099.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,729.66 : 1,128,458.31 = 455,147.74 : x
  2. Step 2: Convert to fraction form
    817,729.66/1,128,458.31 = 455,147.74/x
  3. Step 3: Cross multiply
    817,729.66x = 1,128,458.31 × 455,147.74
  4. Step 4: Simplify right side
    817,729.66x = 513,615,249,480.72
  5. Step 5: Solve for x
    x = 513,615,249,480.72/817,729.66
  6. Step 6: Final answer
    x = 628,099.08

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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.