Home / 789,412.40-1,089,344.38-445,227.74

Finding the Fourth Proportional to 789,412.40, 1,089,344.38 and 445,227.74

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Solution

The fourth proportional to 789,412.40, 1,089,344.38 and 445,227.74 is: 614,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,412.40 : 1,089,344.38 = 445,227.74 : x
  2. Step 2: Convert to fraction form
    789,412.40/1,089,344.38 = 445,227.74/x
  3. Step 3: Cross multiply
    789,412.40x = 1,089,344.38 × 445,227.74
  4. Step 4: Simplify right side
    789,412.40x = 485,006,336,389.10
  5. Step 5: Solve for x
    x = 485,006,336,389.10/789,412.40
  6. Step 6: Final answer
    x = 614,389.05

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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.