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Finding the Fourth Proportional to 667,273.24, 920,903.28 and 380,836.72

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Solution

The fourth proportional to 667,273.24, 920,903.28 and 380,836.72 is: 525,592.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,273.24 : 920,903.28 = 380,836.72 : x
  2. Step 2: Convert to fraction form
    667,273.24/920,903.28 = 380,836.72/x
  3. Step 3: Cross multiply
    667,273.24x = 920,903.28 × 380,836.72
  4. Step 4: Simplify right side
    667,273.24x = 350,713,784,592.44
  5. Step 5: Solve for x
    x = 350,713,784,592.44/667,273.24
  6. Step 6: Final answer
    x = 525,592.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.