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Finding the Fourth Proportional to 660,080.46, 989,065.98 and 423,226.74

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Solution

The fourth proportional to 660,080.46, 989,065.98 and 423,226.74 is: 634,163.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,080.46 : 989,065.98 = 423,226.74 : x
  2. Step 2: Convert to fraction form
    660,080.46/989,065.98 = 423,226.74/x
  3. Step 3: Cross multiply
    660,080.46x = 989,065.98 × 423,226.74
  4. Step 4: Simplify right side
    660,080.46x = 418,599,170,360.31
  5. Step 5: Solve for x
    x = 418,599,170,360.31/660,080.46
  6. Step 6: Final answer
    x = 634,163.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.