Home / 454,350.28-679,014.63-428,099.44

Finding the Fourth Proportional to 454,350.28, 679,014.63 and 428,099.44

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Solution

The fourth proportional to 454,350.28, 679,014.63 and 428,099.44 is: 639,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,350.28 : 679,014.63 = 428,099.44 : x
  2. Step 2: Convert to fraction form
    454,350.28/679,014.63 = 428,099.44/x
  3. Step 3: Cross multiply
    454,350.28x = 679,014.63 × 428,099.44
  4. Step 4: Simplify right side
    454,350.28x = 290,685,785,191.33
  5. Step 5: Solve for x
    x = 290,685,785,191.33/454,350.28
  6. Step 6: Final answer
    x = 639,783.45

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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.