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Finding the Fourth Proportional to 984,914.80, 1,477,372.20 and 669,986.80

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Solution

The fourth proportional to 984,914.80, 1,477,372.20 and 669,986.80 is: 1,004,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,914.80 : 1,477,372.20 = 669,986.80 : x
  2. Step 2: Convert to fraction form
    984,914.80/1,477,372.20 = 669,986.80/x
  3. Step 3: Cross multiply
    984,914.80x = 1,477,372.20 × 669,986.80
  4. Step 4: Simplify right side
    984,914.80x = 989,819,872,686.96
  5. Step 5: Solve for x
    x = 989,819,872,686.96/984,914.80
  6. Step 6: Final answer
    x = 1,004,980.20

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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.