Home / 687,310.80-1,031,225.40-332,638.80

Finding the Fourth Proportional to 687,310.80, 1,031,225.40 and 332,638.80

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Solution

The fourth proportional to 687,310.80, 1,031,225.40 and 332,638.80 is: 499,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,310.80 : 1,031,225.40 = 332,638.80 : x
  2. Step 2: Convert to fraction form
    687,310.80/1,031,225.40 = 332,638.80/x
  3. Step 3: Cross multiply
    687,310.80x = 1,031,225.40 × 332,638.80
  4. Step 4: Simplify right side
    687,310.80x = 343,025,579,585.52
  5. Step 5: Solve for x
    x = 343,025,579,585.52/687,310.80
  6. Step 6: Final answer
    x = 499,083.65

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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.