Home / 687,580.80-1,031,468.40-214,216.80

Finding the Fourth Proportional to 687,580.80, 1,031,468.40 and 214,216.80

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Solution

The fourth proportional to 687,580.80, 1,031,468.40 and 214,216.80 is: 321,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,580.80 : 1,031,468.40 = 214,216.80 : x
  2. Step 2: Convert to fraction form
    687,580.80/1,031,468.40 = 214,216.80/x
  3. Step 3: Cross multiply
    687,580.80x = 1,031,468.40 × 214,216.80
  4. Step 4: Simplify right side
    687,580.80x = 220,957,859,949.12
  5. Step 5: Solve for x
    x = 220,957,859,949.12/687,580.80
  6. Step 6: Final answer
    x = 321,355.48

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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.