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Finding the Fourth Proportional to 621,269.56, 930,686.44 and 321,946.48

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Solution

The fourth proportional to 621,269.56, 930,686.44 and 321,946.48 is: 482,288.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,269.56 : 930,686.44 = 321,946.48 : x
  2. Step 2: Convert to fraction form
    621,269.56/930,686.44 = 321,946.48/x
  3. Step 3: Cross multiply
    621,269.56x = 930,686.44 × 321,946.48
  4. Step 4: Simplify right side
    621,269.56x = 299,631,223,341.73
  5. Step 5: Solve for x
    x = 299,631,223,341.73/621,269.56
  6. Step 6: Final answer
    x = 482,288.60

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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.