Home / 607,338.20-911,007.30-489,240.20

Finding the Fourth Proportional to 607,338.20, 911,007.30 and 489,240.20

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Solution

The fourth proportional to 607,338.20, 911,007.30 and 489,240.20 is: 733,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,338.20 : 911,007.30 = 489,240.20 : x
  2. Step 2: Convert to fraction form
    607,338.20/911,007.30 = 489,240.20/x
  3. Step 3: Cross multiply
    607,338.20x = 911,007.30 × 489,240.20
  4. Step 4: Simplify right side
    607,338.20x = 445,701,393,653.46
  5. Step 5: Solve for x
    x = 445,701,393,653.46/607,338.20
  6. Step 6: Final answer
    x = 733,860.30

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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.