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Finding the Fourth Proportional to 489,376.40, 734,064.60 and 323,164.40

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Solution

The fourth proportional to 489,376.40, 734,064.60 and 323,164.40 is: 484,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,376.40 : 734,064.60 = 323,164.40 : x
  2. Step 2: Convert to fraction form
    489,376.40/734,064.60 = 323,164.40/x
  3. Step 3: Cross multiply
    489,376.40x = 734,064.60 × 323,164.40
  4. Step 4: Simplify right side
    489,376.40x = 237,223,546,020.24
  5. Step 5: Solve for x
    x = 237,223,546,020.24/489,376.40
  6. Step 6: Final answer
    x = 484,746.60

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Similar ratio
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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.