Home / 511,966.17-764,056.26-455,217.30

Finding the Fourth Proportional to 511,966.17, 764,056.26 and 455,217.30

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Solution

The fourth proportional to 511,966.17, 764,056.26 and 455,217.30 is: 679,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,966.17 : 764,056.26 = 455,217.30 : x
  2. Step 2: Convert to fraction form
    511,966.17/764,056.26 = 455,217.30/x
  3. Step 3: Cross multiply
    511,966.17x = 764,056.26 × 455,217.30
  4. Step 4: Simplify right side
    511,966.17x = 347,811,627,725.30
  5. Step 5: Solve for x
    x = 347,811,627,725.30/511,966.17
  6. Step 6: Final answer
    x = 679,364.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.