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Finding the Fourth Proportional to 448,143.60, 672,215.40 and 445,033.20

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Solution

The fourth proportional to 448,143.60, 672,215.40 and 445,033.20 is: 667,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,143.60 : 672,215.40 = 445,033.20 : x
  2. Step 2: Convert to fraction form
    448,143.60/672,215.40 = 445,033.20/x
  3. Step 3: Cross multiply
    448,143.60x = 672,215.40 × 445,033.20
  4. Step 4: Simplify right side
    448,143.60x = 299,158,170,551.28
  5. Step 5: Solve for x
    x = 299,158,170,551.28/448,143.60
  6. Step 6: Final answer
    x = 667,549.80

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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.