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Finding the Fourth Proportional to 447,798.80, 671,698.20 and 413,584.40

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Solution

The fourth proportional to 447,798.80, 671,698.20 and 413,584.40 is: 620,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,798.80 : 671,698.20 = 413,584.40 : x
  2. Step 2: Convert to fraction form
    447,798.80/671,698.20 = 413,584.40/x
  3. Step 3: Cross multiply
    447,798.80x = 671,698.20 × 413,584.40
  4. Step 4: Simplify right side
    447,798.80x = 277,803,897,028.08
  5. Step 5: Solve for x
    x = 277,803,897,028.08/447,798.80
  6. Step 6: Final answer
    x = 620,376.60

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Similar ratio
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1.5x scale

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.