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Finding the Fourth Proportional to 491,803.40, 736,668.30 and 439,272.20

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Solution

The fourth proportional to 491,803.40, 736,668.30 and 439,272.20 is: 657,982.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,803.40 : 736,668.30 = 439,272.20 : x
  2. Step 2: Convert to fraction form
    491,803.40/736,668.30 = 439,272.20/x
  3. Step 3: Cross multiply
    491,803.40x = 736,668.30 × 439,272.20
  4. Step 4: Simplify right side
    491,803.40x = 323,597,904,811.26
  5. Step 5: Solve for x
    x = 323,597,904,811.26/491,803.40
  6. Step 6: Final answer
    x = 657,982.24

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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.