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Finding the Fourth Proportional to 968,728.80, 1,450,328.40 and 858,136.80

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Solution

The fourth proportional to 968,728.80, 1,450,328.40 and 858,136.80 is: 1,284,756.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    968,728.80 : 1,450,328.40 = 858,136.80 : x
  2. Step 2: Convert to fraction form
    968,728.80/1,450,328.40 = 858,136.80/x
  3. Step 3: Cross multiply
    968,728.80x = 1,450,328.40 × 858,136.80
  4. Step 4: Simplify right side
    968,728.80x = 1,244,580,172,125.12
  5. Step 5: Solve for x
    x = 1,244,580,172,125.12/968,728.80
  6. Step 6: Final answer
    x = 1,284,756.04

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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.