Home / 789,455.40-1,089,447.70-426,878.42

Finding the Fourth Proportional to 789,455.40, 1,089,447.70 and 426,878.42

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Solution

The fourth proportional to 789,455.40, 1,089,447.70 and 426,878.42 is: 589,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,455.40 : 1,089,447.70 = 426,878.42 : x
  2. Step 2: Convert to fraction form
    789,455.40/1,089,447.70 = 426,878.42/x
  3. Step 3: Cross multiply
    789,455.40x = 1,089,447.70 × 426,878.42
  4. Step 4: Simplify right side
    789,455.40x = 465,061,712,848.63
  5. Step 5: Solve for x
    x = 465,061,712,848.63/789,455.40
  6. Step 6: Final answer
    x = 589,091.81

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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.