Home / 672,127.38-927,878.66-455,480.60

Finding the Fourth Proportional to 672,127.38, 927,878.66 and 455,480.60

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Solution

The fourth proportional to 672,127.38, 927,878.66 and 455,480.60 is: 628,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,127.38 : 927,878.66 = 455,480.60 : x
  2. Step 2: Convert to fraction form
    672,127.38/927,878.66 = 455,480.60/x
  3. Step 3: Cross multiply
    672,127.38x = 927,878.66 × 455,480.60
  4. Step 4: Simplify right side
    672,127.38x = 422,630,721,867.20
  5. Step 5: Solve for x
    x = 422,630,721,867.20/672,127.38
  6. Step 6: Final answer
    x = 628,795.57

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Half scale
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Double scale
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1.5x scale

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.