Home / 820,312.20-1,230,468.30-503,742.60

Finding the Fourth Proportional to 820,312.20, 1,230,468.30 and 503,742.60

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Solution

The fourth proportional to 820,312.20, 1,230,468.30 and 503,742.60 is: 755,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,312.20 : 1,230,468.30 = 503,742.60 : x
  2. Step 2: Convert to fraction form
    820,312.20/1,230,468.30 = 503,742.60/x
  3. Step 3: Cross multiply
    820,312.20x = 1,230,468.30 × 503,742.60
  4. Step 4: Simplify right side
    820,312.20x = 619,839,300,659.58
  5. Step 5: Solve for x
    x = 619,839,300,659.58/820,312.20
  6. Step 6: Final answer
    x = 755,613.90

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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.