Home / 1,089,820.80-1,634,731.20-788,889.60

Finding the Fourth Proportional to 1,089,820.80, 1,634,731.20 and 788,889.60

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Solution

The fourth proportional to 1,089,820.80, 1,634,731.20 and 788,889.60 is: 1,183,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,820.80 : 1,634,731.20 = 788,889.60 : x
  2. Step 2: Convert to fraction form
    1,089,820.80/1,634,731.20 = 788,889.60/x
  3. Step 3: Cross multiply
    1,089,820.80x = 1,634,731.20 × 788,889.60
  4. Step 4: Simplify right side
    1,089,820.80x = 1,289,622,442,475.52
  5. Step 5: Solve for x
    x = 1,289,622,442,475.52/1,089,820.80
  6. Step 6: Final answer
    x = 1,183,334.40

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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.