Home / 630,255.75-869,764.77-343,786.07

Finding the Fourth Proportional to 630,255.75, 869,764.77 and 343,786.07

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Solution

The fourth proportional to 630,255.75, 869,764.77 and 343,786.07 is: 474,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,255.75 : 869,764.77 = 343,786.07 : x
  2. Step 2: Convert to fraction form
    630,255.75/869,764.77 = 343,786.07/x
  3. Step 3: Cross multiply
    630,255.75x = 869,764.77 × 343,786.07
  4. Step 4: Simplify right side
    630,255.75x = 299,013,007,753.93
  5. Step 5: Solve for x
    x = 299,013,007,753.93/630,255.75
  6. Step 6: Final answer
    x = 474,431.23

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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.