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Finding the Fourth Proportional to 447,218.80, 670,828.20 and 413,004.40

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Solution

The fourth proportional to 447,218.80, 670,828.20 and 413,004.40 is: 619,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,218.80 : 670,828.20 = 413,004.40 : x
  2. Step 2: Convert to fraction form
    447,218.80/670,828.20 = 413,004.40/x
  3. Step 3: Cross multiply
    447,218.80x = 670,828.20 × 413,004.40
  4. Step 4: Simplify right side
    447,218.80x = 277,054,998,244.08
  5. Step 5: Solve for x
    x = 277,054,998,244.08/447,218.80
  6. Step 6: Final answer
    x = 619,506.60

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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.