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Finding the Fourth Proportional to 660,126.30, 990,521.59 and 491,984.27

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Solution

The fourth proportional to 660,126.30, 990,521.59 and 491,984.27 is: 738,223.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,126.30 : 990,521.59 = 491,984.27 : x
  2. Step 2: Convert to fraction form
    660,126.30/990,521.59 = 491,984.27/x
  3. Step 3: Cross multiply
    660,126.30x = 990,521.59 × 491,984.27
  4. Step 4: Simplify right side
    660,126.30x = 487,321,041,375.39
  5. Step 5: Solve for x
    x = 487,321,041,375.39/660,126.30
  6. Step 6: Final answer
    x = 738,223.94

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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.