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Finding the Fourth Proportional to 491,503.32, 678,296.16 and 276,657.12

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Solution

The fourth proportional to 491,503.32, 678,296.16 and 276,657.12 is: 381,798.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,503.32 : 678,296.16 = 276,657.12 : x
  2. Step 2: Convert to fraction form
    491,503.32/678,296.16 = 276,657.12/x
  3. Step 3: Cross multiply
    491,503.32x = 678,296.16 × 276,657.12
  4. Step 4: Simplify right side
    491,503.32x = 187,655,462,132.66
  5. Step 5: Solve for x
    x = 187,655,462,132.66/491,503.32
  6. Step 6: Final answer
    x = 381,798.97

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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.