Home / 644,743.20-965,271.60-395,911.20

Finding the Fourth Proportional to 644,743.20, 965,271.60 and 395,911.20

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Solution

The fourth proportional to 644,743.20, 965,271.60 and 395,911.20 is: 592,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,743.20 : 965,271.60 = 395,911.20 : x
  2. Step 2: Convert to fraction form
    644,743.20/965,271.60 = 395,911.20/x
  3. Step 3: Cross multiply
    644,743.20x = 965,271.60 × 395,911.20
  4. Step 4: Simplify right side
    644,743.20x = 382,161,837,481.92
  5. Step 5: Solve for x
    x = 382,161,837,481.92/644,743.20
  6. Step 6: Final answer
    x = 592,734.96

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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.