Home / 789,561.79-1,089,581.70-445,398.46

Finding the Fourth Proportional to 789,561.79, 1,089,581.70 and 445,398.46

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Solution

The fourth proportional to 789,561.79, 1,089,581.70 and 445,398.46 is: 614,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,561.79 : 1,089,581.70 = 445,398.46 : x
  2. Step 2: Convert to fraction form
    789,561.79/1,089,581.70 = 445,398.46/x
  3. Step 3: Cross multiply
    789,561.79x = 1,089,581.70 × 445,398.46
  4. Step 4: Simplify right side
    789,561.79x = 485,298,011,224.18
  5. Step 5: Solve for x
    x = 485,298,011,224.18/789,561.79
  6. Step 6: Final answer
    x = 614,642.22

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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.