Home / 809,160.02-1,212,725.11-429,142.80

Finding the Fourth Proportional to 809,160.02, 1,212,725.11 and 429,142.80

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Solution

The fourth proportional to 809,160.02, 1,212,725.11 and 429,142.80 is: 643,175.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,160.02 : 1,212,725.11 = 429,142.80 : x
  2. Step 2: Convert to fraction form
    809,160.02/1,212,725.11 = 429,142.80/x
  3. Step 3: Cross multiply
    809,160.02x = 1,212,725.11 × 429,142.80
  4. Step 4: Simplify right side
    809,160.02x = 520,432,245,324.42
  5. Step 5: Solve for x
    x = 520,432,245,324.42/809,160.02
  6. Step 6: Final answer
    x = 643,175.93

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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.