Home / 1,081,285,142.64-1,622,089,618.56-391,353,821.28

Finding the Fourth Proportional to 1,081,285,142.64, 1,622,089,618.56 and 391,353,821.28

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Solution

The fourth proportional to 1,081,285,142.64, 1,622,089,618.56 and 391,353,821.28 is: 587,089,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,285,142.64 : 1,622,089,618.56 = 391,353,821.28 : x
  2. Step 2: Convert to fraction form
    1,081,285,142.64/1,622,089,618.56 = 391,353,821.28/x
  3. Step 3: Cross multiply
    1,081,285,142.64x = 1,622,089,618.56 × 391,353,821.28
  4. Step 4: Simplify right side
    1,081,285,142.64x = 634,810,970,682,073,600
  5. Step 5: Solve for x
    x = 634,810,970,682,073,600/1,081,285,142.64
  6. Step 6: Final answer
    x = 587,089,330.69

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1.5x scale

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.