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Finding the Fourth Proportional to 491,443.34, 678,213.63 and 276,597.32

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Solution

The fourth proportional to 491,443.34, 678,213.63 and 276,597.32 is: 381,716.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,443.34 : 678,213.63 = 276,597.32 : x
  2. Step 2: Convert to fraction form
    491,443.34/678,213.63 = 276,597.32/x
  3. Step 3: Cross multiply
    491,443.34x = 678,213.63 × 276,597.32
  4. Step 4: Simplify right side
    491,443.34x = 187,592,069,054.40
  5. Step 5: Solve for x
    x = 187,592,069,054.40/491,443.34
  6. Step 6: Final answer
    x = 381,716.58

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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.