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Finding the Fourth Proportional to 635,308.72, 876,726.80 and 377,237.20

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Solution

The fourth proportional to 635,308.72, 876,726.80 and 377,237.20 is: 520,587.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,308.72 : 876,726.80 = 377,237.20 : x
  2. Step 2: Convert to fraction form
    635,308.72/876,726.80 = 377,237.20/x
  3. Step 3: Cross multiply
    635,308.72x = 876,726.80 × 377,237.20
  4. Step 4: Simplify right side
    635,308.72x = 330,733,963,196.96
  5. Step 5: Solve for x
    x = 330,733,963,196.96/635,308.72
  6. Step 6: Final answer
    x = 520,587.79

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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.