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Finding the Fourth Proportional to 403,724.40, 605,586.60 and 297,970.80

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Solution

The fourth proportional to 403,724.40, 605,586.60 and 297,970.80 is: 446,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,724.40 : 605,586.60 = 297,970.80 : x
  2. Step 2: Convert to fraction form
    403,724.40/605,586.60 = 297,970.80/x
  3. Step 3: Cross multiply
    403,724.40x = 605,586.60 × 297,970.80
  4. Step 4: Simplify right side
    403,724.40x = 180,447,123,671.28
  5. Step 5: Solve for x
    x = 180,447,123,671.28/403,724.40
  6. Step 6: Final answer
    x = 446,956.20

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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.