Home / 789,647.18-1,089,713.12-427,071.06

Finding the Fourth Proportional to 789,647.18, 1,089,713.12 and 427,071.06

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Solution

The fourth proportional to 789,647.18, 1,089,713.12 and 427,071.06 is: 589,358.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,647.18 : 1,089,713.12 = 427,071.06 : x
  2. Step 2: Convert to fraction form
    789,647.18/1,089,713.12 = 427,071.06/x
  3. Step 3: Cross multiply
    789,647.18x = 1,089,713.12 × 427,071.06
  4. Step 4: Simplify right side
    789,647.18x = 465,384,937,254.31
  5. Step 5: Solve for x
    x = 465,384,937,254.31/789,647.18
  6. Step 6: Final answer
    x = 589,358.07

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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.