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Finding the Fourth Proportional to 446,882.40, 669,886.20 and 399,643.20

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Solution

The fourth proportional to 446,882.40, 669,886.20 and 399,643.20 is: 599,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,882.40 : 669,886.20 = 399,643.20 : x
  2. Step 2: Convert to fraction form
    446,882.40/669,886.20 = 399,643.20/x
  3. Step 3: Cross multiply
    446,882.40x = 669,886.20 × 399,643.20
  4. Step 4: Simplify right side
    446,882.40x = 267,715,464,603.84
  5. Step 5: Solve for x
    x = 267,715,464,603.84/446,882.40
  6. Step 6: Final answer
    x = 599,073.64

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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.