Home / 789,237.10-1,089,253.74-445,143.70

Finding the Fourth Proportional to 789,237.10, 1,089,253.74 and 445,143.70

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Solution

The fourth proportional to 789,237.10, 1,089,253.74 and 445,143.70 is: 614,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,237.10 : 1,089,253.74 = 445,143.70 : x
  2. Step 2: Convert to fraction form
    789,237.10/1,089,253.74 = 445,143.70/x
  3. Step 3: Cross multiply
    789,237.10x = 1,089,253.74 × 445,143.70
  4. Step 4: Simplify right side
    789,237.10x = 484,874,440,062.44
  5. Step 5: Solve for x
    x = 484,874,440,062.44/789,237.10
  6. Step 6: Final answer
    x = 614,358.40

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.