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Finding the Fourth Proportional to 789,707.85, 1,089,797.03 and 445,616.70

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Solution

The fourth proportional to 789,707.85, 1,089,797.03 and 445,616.70 is: 614,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,707.85 : 1,089,797.03 = 445,616.70 : x
  2. Step 2: Convert to fraction form
    789,707.85/1,089,797.03 = 445,616.70/x
  3. Step 3: Cross multiply
    789,707.85x = 1,089,797.03 × 445,616.70
  4. Step 4: Simplify right side
    789,707.85x = 485,631,756,178.40
  5. Step 5: Solve for x
    x = 485,631,756,178.40/789,707.85
  6. Step 6: Final answer
    x = 614,951.16

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.