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Finding the Fourth Proportional to 447,746.40, 671,619.60 and 443,080.80

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Solution

The fourth proportional to 447,746.40, 671,619.60 and 443,080.80 is: 664,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,746.40 : 671,619.60 = 443,080.80 : x
  2. Step 2: Convert to fraction form
    447,746.40/671,619.60 = 443,080.80/x
  3. Step 3: Cross multiply
    447,746.40x = 671,619.60 × 443,080.80
  4. Step 4: Simplify right side
    447,746.40x = 297,581,749,663.68
  5. Step 5: Solve for x
    x = 297,581,749,663.68/447,746.40
  6. Step 6: Final answer
    x = 664,621.20

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1.5x scale

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.