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Finding the Fourth Proportional to 489,662.40, 734,493.60 and 436,209.60

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Solution

The fourth proportional to 489,662.40, 734,493.60 and 436,209.60 is: 654,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,662.40 : 734,493.60 = 436,209.60 : x
  2. Step 2: Convert to fraction form
    489,662.40/734,493.60 = 436,209.60/x
  3. Step 3: Cross multiply
    489,662.40x = 734,493.60 × 436,209.60
  4. Step 4: Simplify right side
    489,662.40x = 320,393,159,458.56
  5. Step 5: Solve for x
    x = 320,393,159,458.56/489,662.40
  6. Step 6: Final answer
    x = 654,314.40

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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.