Home / 491,320.32-678,014.18-276,460.26

Finding the Fourth Proportional to 491,320.32, 678,014.18 and 276,460.26

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Solution

The fourth proportional to 491,320.32, 678,014.18 and 276,460.26 is: 381,510.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,320.32 : 678,014.18 = 276,460.26 : x
  2. Step 2: Convert to fraction form
    491,320.32/678,014.18 = 276,460.26/x
  3. Step 3: Cross multiply
    491,320.32x = 678,014.18 × 276,460.26
  4. Step 4: Simplify right side
    491,320.32x = 187,443,976,486.49
  5. Step 5: Solve for x
    x = 187,443,976,486.49/491,320.32
  6. Step 6: Final answer
    x = 381,510.74

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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.