Home / 491,296.45-678,002.34-276,444.13

Finding the Fourth Proportional to 491,296.45, 678,002.34 and 276,444.13

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Solution

The fourth proportional to 491,296.45, 678,002.34 and 276,444.13 is: 381,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,296.45 : 678,002.34 = 276,444.13 : x
  2. Step 2: Convert to fraction form
    491,296.45/678,002.34 = 276,444.13/x
  3. Step 3: Cross multiply
    491,296.45x = 678,002.34 × 276,444.13
  4. Step 4: Simplify right side
    491,296.45x = 187,429,767,019.26
  5. Step 5: Solve for x
    x = 187,429,767,019.26/491,296.45
  6. Step 6: Final answer
    x = 381,500.35

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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.