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Finding the Fourth Proportional to 446,615.80, 669,923.70 and 412,401.40

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Solution

The fourth proportional to 446,615.80, 669,923.70 and 412,401.40 is: 618,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,615.80 : 669,923.70 = 412,401.40 : x
  2. Step 2: Convert to fraction form
    446,615.80/669,923.70 = 412,401.40/x
  3. Step 3: Cross multiply
    446,615.80x = 669,923.70 × 412,401.40
  4. Step 4: Simplify right side
    446,615.80x = 276,277,471,773.18
  5. Step 5: Solve for x
    x = 276,277,471,773.18/446,615.80
  6. Step 6: Final answer
    x = 618,602.10

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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.