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Finding the Fourth Proportional to 478,428.66, 717,644.00 and 449,199.41

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Solution

The fourth proportional to 478,428.66, 717,644.00 and 449,199.41 is: 673,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,428.66 : 717,644.00 = 449,199.41 : x
  2. Step 2: Convert to fraction form
    478,428.66/717,644.00 = 449,199.41/x
  3. Step 3: Cross multiply
    478,428.66x = 717,644.00 × 449,199.41
  4. Step 4: Simplify right side
    478,428.66x = 322,365,255,555.82
  5. Step 5: Solve for x
    x = 322,365,255,555.82/478,428.66
  6. Step 6: Final answer
    x = 673,800.05

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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.