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Finding the Fourth Proportional to 409,237.20, 613,855.80 and 379,712.70

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Solution

The fourth proportional to 409,237.20, 613,855.80 and 379,712.70 is: 569,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,237.20 : 613,855.80 = 379,712.70 : x
  2. Step 2: Convert to fraction form
    409,237.20/613,855.80 = 379,712.70/x
  3. Step 3: Cross multiply
    409,237.20x = 613,855.80 × 379,712.70
  4. Step 4: Simplify right side
    409,237.20x = 233,088,843,228.66
  5. Step 5: Solve for x
    x = 233,088,843,228.66/409,237.20
  6. Step 6: Final answer
    x = 569,569.05

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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.