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Finding the Fourth Proportional to 555,909.08, 767,236.79 and 351,978.95

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Solution

The fourth proportional to 555,909.08, 767,236.79 and 351,978.95 is: 485,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,909.08 : 767,236.79 = 351,978.95 : x
  2. Step 2: Convert to fraction form
    555,909.08/767,236.79 = 351,978.95/x
  3. Step 3: Cross multiply
    555,909.08x = 767,236.79 × 351,978.95
  4. Step 4: Simplify right side
    555,909.08x = 270,051,202,543.61
  5. Step 5: Solve for x
    x = 270,051,202,543.61/555,909.08
  6. Step 6: Final answer
    x = 485,783.04

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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.