Home / 789,459.54-1,089,388.35-445,276.50

Finding the Fourth Proportional to 789,459.54, 1,089,388.35 and 445,276.50

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Solution

The fourth proportional to 789,459.54, 1,089,388.35 and 445,276.50 is: 614,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,459.54 : 1,089,388.35 = 445,276.50 : x
  2. Step 2: Convert to fraction form
    789,459.54/1,089,388.35 = 445,276.50/x
  3. Step 3: Cross multiply
    789,459.54x = 1,089,388.35 × 445,276.50
  4. Step 4: Simplify right side
    789,459.54x = 485,079,031,628.78
  5. Step 5: Solve for x
    x = 485,079,031,628.78/789,459.54
  6. Step 6: Final answer
    x = 614,444.45

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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.