Home / 817,661.52-1,128,405.28-455,100.64

Finding the Fourth Proportional to 817,661.52, 1,128,405.28 and 455,100.64

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Solution

The fourth proportional to 817,661.52, 1,128,405.28 and 455,100.64 is: 628,056.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,661.52 : 1,128,405.28 = 455,100.64 : x
  2. Step 2: Convert to fraction form
    817,661.52/1,128,405.28 = 455,100.64/x
  3. Step 3: Cross multiply
    817,661.52x = 1,128,405.28 × 455,100.64
  4. Step 4: Simplify right side
    817,661.52x = 513,537,965,107.38
  5. Step 5: Solve for x
    x = 513,537,965,107.38/817,661.52
  6. Step 6: Final answer
    x = 628,056.91

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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.