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Finding the Fourth Proportional to 478,605.56, 660,467.12 and 260,816.12

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Solution

The fourth proportional to 478,605.56, 660,467.12 and 260,816.12 is: 359,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,605.56 : 660,467.12 = 260,816.12 : x
  2. Step 2: Convert to fraction form
    478,605.56/660,467.12 = 260,816.12/x
  3. Step 3: Cross multiply
    478,605.56x = 660,467.12 × 260,816.12
  4. Step 4: Simplify right side
    478,605.56x = 172,260,471,625.97
  5. Step 5: Solve for x
    x = 172,260,471,625.97/478,605.56
  6. Step 6: Final answer
    x = 359,921.58

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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.