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Finding the Fourth Proportional to 489,653.60, 734,480.40 and 265,704.80

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Solution

The fourth proportional to 489,653.60, 734,480.40 and 265,704.80 is: 398,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,653.60 : 734,480.40 = 265,704.80 : x
  2. Step 2: Convert to fraction form
    489,653.60/734,480.40 = 265,704.80/x
  3. Step 3: Cross multiply
    489,653.60x = 734,480.40 × 265,704.80
  4. Step 4: Simplify right side
    489,653.60x = 195,154,967,785.92
  5. Step 5: Solve for x
    x = 195,154,967,785.92/489,653.60
  6. Step 6: Final answer
    x = 398,557.20

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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.