Home / 687,581.40-1,031,517.90-207,769.80

Finding the Fourth Proportional to 687,581.40, 1,031,517.90 and 207,769.80

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Solution

The fourth proportional to 687,581.40, 1,031,517.90 and 207,769.80 is: 311,698.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,581.40 : 1,031,517.90 = 207,769.80 : x
  2. Step 2: Convert to fraction form
    687,581.40/1,031,517.90 = 207,769.80/x
  3. Step 3: Cross multiply
    687,581.40x = 1,031,517.90 × 207,769.80
  4. Step 4: Simplify right side
    687,581.40x = 214,318,267,779.42
  5. Step 5: Solve for x
    x = 214,318,267,779.42/687,581.40
  6. Step 6: Final answer
    x = 311,698.76

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1.5x scale

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.