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Finding the Fourth Proportional to 478,320.39, 660,057.21 and 297,028.44

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Solution

The fourth proportional to 478,320.39, 660,057.21 and 297,028.44 is: 409,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,320.39 : 660,057.21 = 297,028.44 : x
  2. Step 2: Convert to fraction form
    478,320.39/660,057.21 = 297,028.44/x
  3. Step 3: Cross multiply
    478,320.39x = 660,057.21 × 297,028.44
  4. Step 4: Simplify right side
    478,320.39x = 196,055,763,397.05
  5. Step 5: Solve for x
    x = 196,055,763,397.05/478,320.39
  6. Step 6: Final answer
    x = 409,883.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.