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Finding the Fourth Proportional to 545,705.40, 818,558.10 and 279,377.40

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Solution

The fourth proportional to 545,705.40, 818,558.10 and 279,377.40 is: 419,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,705.40 : 818,558.10 = 279,377.40 : x
  2. Step 2: Convert to fraction form
    545,705.40/818,558.10 = 279,377.40/x
  3. Step 3: Cross multiply
    545,705.40x = 818,558.10 × 279,377.40
  4. Step 4: Simplify right side
    545,705.40x = 228,686,633,726.94
  5. Step 5: Solve for x
    x = 228,686,633,726.94/545,705.40
  6. Step 6: Final answer
    x = 419,066.10

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.