Home / 1,089,115.20-1,631,728.80-526,910.40

Finding the Fourth Proportional to 1,089,115.20, 1,631,728.80 and 526,910.40

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Solution

The fourth proportional to 1,089,115.20, 1,631,728.80 and 526,910.40 is: 789,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,115.20 : 1,631,728.80 = 526,910.40 : x
  2. Step 2: Convert to fraction form
    1,089,115.20/1,631,728.80 = 526,910.40/x
  3. Step 3: Cross multiply
    1,089,115.20x = 1,631,728.80 × 526,910.40
  4. Step 4: Simplify right side
    1,089,115.20x = 859,774,874,699.52
  5. Step 5: Solve for x
    x = 859,774,874,699.52/1,089,115.20
  6. Step 6: Final answer
    x = 789,425.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.