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Finding the Fourth Proportional to 478,499.05, 717,847.01 and 328,809.84

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Solution

The fourth proportional to 478,499.05, 717,847.01 and 328,809.84 is: 493,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,499.05 : 717,847.01 = 328,809.84 : x
  2. Step 2: Convert to fraction form
    478,499.05/717,847.01 = 328,809.84/x
  3. Step 3: Cross multiply
    478,499.05x = 717,847.01 × 328,809.84
  4. Step 4: Simplify right side
    478,499.05x = 236,035,160,502.58
  5. Step 5: Solve for x
    x = 236,035,160,502.58/478,499.05
  6. Step 6: Final answer
    x = 493,282.40

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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.