Home / 1,200,385.67-1,800,568.92-489,915.47

Finding the Fourth Proportional to 1,200,385.67, 1,800,568.92 and 489,915.47

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Solution

The fourth proportional to 1,200,385.67, 1,800,568.92 and 489,915.47 is: 734,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,385.67 : 1,800,568.92 = 489,915.47 : x
  2. Step 2: Convert to fraction form
    1,200,385.67/1,800,568.92 = 489,915.47/x
  3. Step 3: Cross multiply
    1,200,385.67x = 1,800,568.92 × 489,915.47
  4. Step 4: Simplify right side
    1,200,385.67x = 882,126,559,706.35
  5. Step 5: Solve for x
    x = 882,126,559,706.35/1,200,385.67
  6. Step 6: Final answer
    x = 734,869.29

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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.