Home / 687,579.80-1,031,628.90-332,907.80

Finding the Fourth Proportional to 687,579.80, 1,031,628.90 and 332,907.80

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Solution

The fourth proportional to 687,579.80, 1,031,628.90 and 332,907.80 is: 499,487.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,579.80 : 1,031,628.90 = 332,907.80 : x
  2. Step 2: Convert to fraction form
    687,579.80/1,031,628.90 = 332,907.80/x
  3. Step 3: Cross multiply
    687,579.80x = 1,031,628.90 × 332,907.80
  4. Step 4: Simplify right side
    687,579.80x = 343,437,307,515.42
  5. Step 5: Solve for x
    x = 343,437,307,515.42/687,579.80
  6. Step 6: Final answer
    x = 499,487.20

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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.