Home / 793,611.20-1,190,416.80-420,363.20

Finding the Fourth Proportional to 793,611.20, 1,190,416.80 and 420,363.20

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Solution

The fourth proportional to 793,611.20, 1,190,416.80 and 420,363.20 is: 630,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    793,611.20 : 1,190,416.80 = 420,363.20 : x
  2. Step 2: Convert to fraction form
    793,611.20/1,190,416.80 = 420,363.20/x
  3. Step 3: Cross multiply
    793,611.20x = 1,190,416.80 × 420,363.20
  4. Step 4: Simplify right side
    793,611.20x = 500,407,415,381.76
  5. Step 5: Solve for x
    x = 500,407,415,381.76/793,611.20
  6. Step 6: Final answer
    x = 630,544.80

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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.