Home / 789,148.17-1,089,131.13-445,054.86

Finding the Fourth Proportional to 789,148.17, 1,089,131.13 and 445,054.86

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Solution

The fourth proportional to 789,148.17, 1,089,131.13 and 445,054.86 is: 614,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,148.17 : 1,089,131.13 = 445,054.86 : x
  2. Step 2: Convert to fraction form
    789,148.17/1,089,131.13 = 445,054.86/x
  3. Step 3: Cross multiply
    789,148.17x = 1,089,131.13 × 445,054.86
  4. Step 4: Simplify right side
    789,148.17x = 484,723,102,583.79
  5. Step 5: Solve for x
    x = 484,723,102,583.79/789,148.17
  6. Step 6: Final answer
    x = 614,235.86

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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.