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Finding the Fourth Proportional to 448,403,429.20, 672,605,143.80 and 448,403,429.20

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Solution

The fourth proportional to 448,403,429.20, 672,605,143.80 and 448,403,429.20 is: 672,605,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,403,429.20 : 672,605,143.80 = 448,403,429.20 : x
  2. Step 2: Convert to fraction form
    448,403,429.20/672,605,143.80 = 448,403,429.20/x
  3. Step 3: Cross multiply
    448,403,429.20x = 672,605,143.80 × 448,403,429.20
  4. Step 4: Simplify right side
    448,403,429.20x = 301,598,452,977,479,104
  5. Step 5: Solve for x
    x = 301,598,452,977,479,104/448,403,429.20
  6. Step 6: Final answer
    x = 672,605,143.80

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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.