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Finding the Fourth Proportional to 659,078.64, 909,542.52 and 372,581.64

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Solution

The fourth proportional to 659,078.64, 909,542.52 and 372,581.64 is: 514,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,078.64 : 909,542.52 = 372,581.64 : x
  2. Step 2: Convert to fraction form
    659,078.64/909,542.52 = 372,581.64/x
  3. Step 3: Cross multiply
    659,078.64x = 909,542.52 × 372,581.64
  4. Step 4: Simplify right side
    659,078.64x = 338,878,843,751.33
  5. Step 5: Solve for x
    x = 338,878,843,751.33/659,078.64
  6. Step 6: Final answer
    x = 514,170.58

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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.