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Finding the Fourth Proportional to 491,593.59, 678,411.90 and 276,741.45

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Solution

The fourth proportional to 491,593.59, 678,411.90 and 276,741.45 is: 381,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,593.59 : 678,411.90 = 276,741.45 : x
  2. Step 2: Convert to fraction form
    491,593.59/678,411.90 = 276,741.45/x
  3. Step 3: Cross multiply
    491,593.59x = 678,411.90 × 276,741.45
  4. Step 4: Simplify right side
    491,593.59x = 187,744,692,903.26
  5. Step 5: Solve for x
    x = 187,744,692,903.26/491,593.59
  6. Step 6: Final answer
    x = 381,910.38

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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.