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Finding the Fourth Proportional to 605,072.85, 906,392.24 and 280,406.21

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Solution

The fourth proportional to 605,072.85, 906,392.24 and 280,406.21 is: 420,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,072.85 : 906,392.24 = 280,406.21 : x
  2. Step 2: Convert to fraction form
    605,072.85/906,392.24 = 280,406.21/x
  3. Step 3: Cross multiply
    605,072.85x = 906,392.24 × 280,406.21
  4. Step 4: Simplify right side
    605,072.85x = 254,158,008,303.66
  5. Step 5: Solve for x
    x = 254,158,008,303.66/605,072.85
  6. Step 6: Final answer
    x = 420,045.30

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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.