Home / 814,803.30-1,221,330.15-309,168.90

Finding the Fourth Proportional to 814,803.30, 1,221,330.15 and 309,168.90

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Solution

The fourth proportional to 814,803.30, 1,221,330.15 and 309,168.90 is: 463,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,803.30 : 1,221,330.15 = 309,168.90 : x
  2. Step 2: Convert to fraction form
    814,803.30/1,221,330.15 = 309,168.90/x
  3. Step 3: Cross multiply
    814,803.30x = 1,221,330.15 × 309,168.90
  4. Step 4: Simplify right side
    814,803.30x = 377,597,299,012.34
  5. Step 5: Solve for x
    x = 377,597,299,012.34/814,803.30
  6. Step 6: Final answer
    x = 463,421.42

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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.