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Finding the Fourth Proportional to 489,969.60, 734,176.80 and 323,563.20

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Solution

The fourth proportional to 489,969.60, 734,176.80 and 323,563.20 is: 484,831.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,969.60 : 734,176.80 = 323,563.20 : x
  2. Step 2: Convert to fraction form
    489,969.60/734,176.80 = 323,563.20/x
  3. Step 3: Cross multiply
    489,969.60x = 734,176.80 × 323,563.20
  4. Step 4: Simplify right side
    489,969.60x = 237,552,594,773.76
  5. Step 5: Solve for x
    x = 237,552,594,773.76/489,969.60
  6. Step 6: Final answer
    x = 484,831.29

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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.