Home / 687,771.28-1,031,186.36-350,158.64

Finding the Fourth Proportional to 687,771.28, 1,031,186.36 and 350,158.64

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Solution

The fourth proportional to 687,771.28, 1,031,186.36 and 350,158.64 is: 524,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,771.28 : 1,031,186.36 = 350,158.64 : x
  2. Step 2: Convert to fraction form
    687,771.28/1,031,186.36 = 350,158.64/x
  3. Step 3: Cross multiply
    687,771.28x = 1,031,186.36 × 350,158.64
  4. Step 4: Simplify right side
    687,771.28x = 361,078,813,404.15
  5. Step 5: Solve for x
    x = 361,078,813,404.15/687,771.28
  6. Step 6: Final answer
    x = 524,998.39

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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.