Home / 687,732.61-1,030,144.56-434,882.61

Finding the Fourth Proportional to 687,732.61, 1,030,144.56 and 434,882.61

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Solution

The fourth proportional to 687,732.61, 1,030,144.56 and 434,882.61 is: 651,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,732.61 : 1,030,144.56 = 434,882.61 : x
  2. Step 2: Convert to fraction form
    687,732.61/1,030,144.56 = 434,882.61/x
  3. Step 3: Cross multiply
    687,732.61x = 1,030,144.56 × 434,882.61
  4. Step 4: Simplify right side
    687,732.61x = 447,991,954,930.10
  5. Step 5: Solve for x
    x = 447,991,954,930.10/687,732.61
  6. Step 6: Final answer
    x = 651,404.26

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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.