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Finding the Fourth Proportional to 664,606,478.80, 996,909,718.20 and 446,928,245.20

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Solution

The fourth proportional to 664,606,478.80, 996,909,718.20 and 446,928,245.20 is: 670,392,367.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,606,478.80 : 996,909,718.20 = 446,928,245.20 : x
  2. Step 2: Convert to fraction form
    664,606,478.80/996,909,718.20 = 446,928,245.20/x
  3. Step 3: Cross multiply
    664,606,478.80x = 996,909,718.20 × 446,928,245.20
  4. Step 4: Simplify right side
    664,606,478.80x = 445,547,110,977,952,512
  5. Step 5: Solve for x
    x = 445,547,110,977,952,512/664,606,478.80
  6. Step 6: Final answer
    x = 670,392,367.80

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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.