Home / 843,136.40-1,264,704.60-489,061.10

Finding the Fourth Proportional to 843,136.40, 1,264,704.60 and 489,061.10

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Solution

The fourth proportional to 843,136.40, 1,264,704.60 and 489,061.10 is: 733,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,136.40 : 1,264,704.60 = 489,061.10 : x
  2. Step 2: Convert to fraction form
    843,136.40/1,264,704.60 = 489,061.10/x
  3. Step 3: Cross multiply
    843,136.40x = 1,264,704.60 × 489,061.10
  4. Step 4: Simplify right side
    843,136.40x = 618,517,822,851.06
  5. Step 5: Solve for x
    x = 618,517,822,851.06/843,136.40
  6. Step 6: Final answer
    x = 733,591.65

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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.