Home / 687,819.92-1,031,575.44-288,911.12

Finding the Fourth Proportional to 687,819.92, 1,031,575.44 and 288,911.12

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Solution

The fourth proportional to 687,819.92, 1,031,575.44 and 288,911.12 is: 433,301.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,819.92 : 1,031,575.44 = 288,911.12 : x
  2. Step 2: Convert to fraction form
    687,819.92/1,031,575.44 = 288,911.12/x
  3. Step 3: Cross multiply
    687,819.92x = 1,031,575.44 × 288,911.12
  4. Step 4: Simplify right side
    687,819.92x = 298,033,615,734.89
  5. Step 5: Solve for x
    x = 298,033,615,734.89/687,819.92
  6. Step 6: Final answer
    x = 433,301.81

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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.