Home / 687,575.90-1,031,509.65-207,764.30

Finding the Fourth Proportional to 687,575.90, 1,031,509.65 and 207,764.30

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Solution

The fourth proportional to 687,575.90, 1,031,509.65 and 207,764.30 is: 311,690.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,575.90 : 1,031,509.65 = 207,764.30 : x
  2. Step 2: Convert to fraction form
    687,575.90/1,031,509.65 = 207,764.30/x
  3. Step 3: Cross multiply
    687,575.90x = 1,031,509.65 × 207,764.30
  4. Step 4: Simplify right side
    687,575.90x = 214,310,880,375.50
  5. Step 5: Solve for x
    x = 214,310,880,375.50/687,575.90
  6. Step 6: Final answer
    x = 311,690.51

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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.