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Finding the Fourth Proportional to 635,210.32, 876,632.76 and 419,980.32

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Solution

The fourth proportional to 635,210.32, 876,632.76 and 419,980.32 is: 579,600.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,210.32 : 876,632.76 = 419,980.32 : x
  2. Step 2: Convert to fraction form
    635,210.32/876,632.76 = 419,980.32/x
  3. Step 3: Cross multiply
    635,210.32x = 876,632.76 × 419,980.32
  4. Step 4: Simplify right side
    635,210.32x = 368,168,507,067.28
  5. Step 5: Solve for x
    x = 368,168,507,067.28/635,210.32
  6. Step 6: Final answer
    x = 579,600.95

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Double scale
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Similar ratio
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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.