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Finding the Fourth Proportional to 607,450.80, 911,176.20 and 489,352.80

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Solution

The fourth proportional to 607,450.80, 911,176.20 and 489,352.80 is: 734,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,450.80 : 911,176.20 = 489,352.80 : x
  2. Step 2: Convert to fraction form
    607,450.80/911,176.20 = 489,352.80/x
  3. Step 3: Cross multiply
    607,450.80x = 911,176.20 × 489,352.80
  4. Step 4: Simplify right side
    607,450.80x = 445,886,624,763.36
  5. Step 5: Solve for x
    x = 445,886,624,763.36/607,450.80
  6. Step 6: Final answer
    x = 734,029.20

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Double scale
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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.