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Finding the Fourth Proportional to 478,611.75, 660,488.55 and 263,759.52

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Solution

The fourth proportional to 478,611.75, 660,488.55 and 263,759.52 is: 363,990.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,611.75 : 660,488.55 = 263,759.52 : x
  2. Step 2: Convert to fraction form
    478,611.75/660,488.55 = 263,759.52/x
  3. Step 3: Cross multiply
    478,611.75x = 660,488.55 × 263,759.52
  4. Step 4: Simplify right side
    478,611.75x = 174,210,142,913.50
  5. Step 5: Solve for x
    x = 174,210,142,913.50/478,611.75
  6. Step 6: Final answer
    x = 363,990.53

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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.