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Finding the Fourth Proportional to 621,066.60, 930,935.52 and 321,245.28

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Solution

The fourth proportional to 621,066.60, 930,935.52 and 321,245.28 is: 481,524.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,066.60 : 930,935.52 = 321,245.28 : x
  2. Step 2: Convert to fraction form
    621,066.60/930,935.52 = 321,245.28/x
  3. Step 3: Cross multiply
    621,066.60x = 930,935.52 × 321,245.28
  4. Step 4: Simplify right side
    621,066.60x = 299,058,641,784.35
  5. Step 5: Solve for x
    x = 299,058,641,784.35/621,066.60
  6. Step 6: Final answer
    x = 481,524.27

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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.