Home / 789,779.52-1,089,914.40-450,279.36

Finding the Fourth Proportional to 789,779.52, 1,089,914.40 and 450,279.36

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Solution

The fourth proportional to 789,779.52, 1,089,914.40 and 450,279.36 is: 621,396.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,779.52 : 1,089,914.40 = 450,279.36 : x
  2. Step 2: Convert to fraction form
    789,779.52/1,089,914.40 = 450,279.36/x
  3. Step 3: Cross multiply
    789,779.52x = 1,089,914.40 × 450,279.36
  4. Step 4: Simplify right side
    789,779.52x = 490,765,958,486.78
  5. Step 5: Solve for x
    x = 490,765,958,486.78/789,779.52
  6. Step 6: Final answer
    x = 621,396.16

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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.