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Finding the Fourth Proportional to 667,324.19, 920,999.01 and 409,155.48

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Solution

The fourth proportional to 667,324.19, 920,999.01 and 409,155.48 is: 564,690.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,324.19 : 920,999.01 = 409,155.48 : x
  2. Step 2: Convert to fraction form
    667,324.19/920,999.01 = 409,155.48/x
  3. Step 3: Cross multiply
    667,324.19x = 920,999.01 × 409,155.48
  4. Step 4: Simplify right side
    667,324.19x = 376,831,792,016.08
  5. Step 5: Solve for x
    x = 376,831,792,016.08/667,324.19
  6. Step 6: Final answer
    x = 564,690.74

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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.