Home / 789,661.54-1,089,640.65-445,502.89

Finding the Fourth Proportional to 789,661.54, 1,089,640.65 and 445,502.89

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Solution

The fourth proportional to 789,661.54, 1,089,640.65 and 445,502.89 is: 614,741.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,661.54 : 1,089,640.65 = 445,502.89 : x
  2. Step 2: Convert to fraction form
    789,661.54/1,089,640.65 = 445,502.89/x
  3. Step 3: Cross multiply
    789,661.54x = 1,089,640.65 × 445,502.89
  4. Step 4: Simplify right side
    789,661.54x = 485,438,058,636.48
  5. Step 5: Solve for x
    x = 485,438,058,636.48/789,661.54
  6. Step 6: Final answer
    x = 614,741.93

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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.