Home / 1,089,750.89-1,634,609.89-490,288.72

Finding the Fourth Proportional to 1,089,750.89, 1,634,609.89 and 490,288.72

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Solution

The fourth proportional to 1,089,750.89, 1,634,609.89 and 490,288.72 is: 735,425.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,750.89 : 1,634,609.89 = 490,288.72 : x
  2. Step 2: Convert to fraction form
    1,089,750.89/1,634,609.89 = 490,288.72/x
  3. Step 3: Cross multiply
    1,089,750.89x = 1,634,609.89 × 490,288.72
  4. Step 4: Simplify right side
    1,089,750.89x = 801,430,780,042.95
  5. Step 5: Solve for x
    x = 801,430,780,042.95/1,089,750.89
  6. Step 6: Final answer
    x = 735,425.67

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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.