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Finding the Fourth Proportional to 478,599.20, 660,465.52 and 263,739.20

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Solution

The fourth proportional to 478,599.20, 660,465.52 and 263,739.20 is: 363,959.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,599.20 : 660,465.52 = 263,739.20 : x
  2. Step 2: Convert to fraction form
    478,599.20/660,465.52 = 263,739.20/x
  3. Step 3: Cross multiply
    478,599.20x = 660,465.52 × 263,739.20
  4. Step 4: Simplify right side
    478,599.20x = 174,190,647,872.38
  5. Step 5: Solve for x
    x = 174,190,647,872.38/478,599.20
  6. Step 6: Final answer
    x = 363,959.34

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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.