Home / 1,089,455.40-1,634,183.10-987,978.60

Finding the Fourth Proportional to 1,089,455.40, 1,634,183.10 and 987,978.60

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Solution

The fourth proportional to 1,089,455.40, 1,634,183.10 and 987,978.60 is: 1,481,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,455.40 : 1,634,183.10 = 987,978.60 : x
  2. Step 2: Convert to fraction form
    1,089,455.40/1,634,183.10 = 987,978.60/x
  3. Step 3: Cross multiply
    1,089,455.40x = 1,634,183.10 × 987,978.60
  4. Step 4: Simplify right side
    1,089,455.40x = 1,614,537,931,281.66
  5. Step 5: Solve for x
    x = 1,614,537,931,281.66/1,089,455.40
  6. Step 6: Final answer
    x = 1,481,967.90

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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.