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Finding the Fourth Proportional to 635,309.72, 876,728.18 and 377,238.20

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Solution

The fourth proportional to 635,309.72, 876,728.18 and 377,238.20 is: 520,589.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,309.72 : 876,728.18 = 377,238.20 : x
  2. Step 2: Convert to fraction form
    635,309.72/876,728.18 = 377,238.20/x
  3. Step 3: Cross multiply
    635,309.72x = 876,728.18 × 377,238.20
  4. Step 4: Simplify right side
    635,309.72x = 330,735,360,512.48
  5. Step 5: Solve for x
    x = 330,735,360,512.48/635,309.72
  6. Step 6: Final answer
    x = 520,589.17

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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.