Home / 864,467.13-1,297,613.76-485,711.55

Finding the Fourth Proportional to 864,467.13, 1,297,613.76 and 485,711.55

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Solution

The fourth proportional to 864,467.13, 1,297,613.76 and 485,711.55 is: 729,080.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,467.13 : 1,297,613.76 = 485,711.55 : x
  2. Step 2: Convert to fraction form
    864,467.13/1,297,613.76 = 485,711.55/x
  3. Step 3: Cross multiply
    864,467.13x = 1,297,613.76 × 485,711.55
  4. Step 4: Simplify right side
    864,467.13x = 630,265,990,670.93
  5. Step 5: Solve for x
    x = 630,265,990,670.93/864,467.13
  6. Step 6: Final answer
    x = 729,080.34

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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.