Home / 818,830.17-1,228,245.26-319,844.25

Finding the Fourth Proportional to 818,830.17, 1,228,245.26 and 319,844.25

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Solution

The fourth proportional to 818,830.17, 1,228,245.26 and 319,844.25 is: 479,766.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,830.17 : 1,228,245.26 = 319,844.25 : x
  2. Step 2: Convert to fraction form
    818,830.17/1,228,245.26 = 319,844.25/x
  3. Step 3: Cross multiply
    818,830.17x = 1,228,245.26 × 319,844.25
  4. Step 4: Simplify right side
    818,830.17x = 392,847,184,000.76
  5. Step 5: Solve for x
    x = 392,847,184,000.76/818,830.17
  6. Step 6: Final answer
    x = 479,766.38

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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.