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Finding the Fourth Proportional to 489,660.30, 734,490.45 and 454,230.90

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Solution

The fourth proportional to 489,660.30, 734,490.45 and 454,230.90 is: 681,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,660.30 : 734,490.45 = 454,230.90 : x
  2. Step 2: Convert to fraction form
    489,660.30/734,490.45 = 454,230.90/x
  3. Step 3: Cross multiply
    489,660.30x = 734,490.45 × 454,230.90
  4. Step 4: Simplify right side
    489,660.30x = 333,628,258,144.91
  5. Step 5: Solve for x
    x = 333,628,258,144.91/489,660.30
  6. Step 6: Final answer
    x = 681,346.35

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Similar ratio
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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.