Home / 328,028,920.20-492,048,629.10-85,691,824.20

Finding the Fourth Proportional to 328,028,920.20, 492,048,629.10 and 85,691,824.20

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Solution

The fourth proportional to 328,028,920.20, 492,048,629.10 and 85,691,824.20 is: 128,539,107.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,028,920.20 : 492,048,629.10 = 85,691,824.20 : x
  2. Step 2: Convert to fraction form
    328,028,920.20/492,048,629.10 = 85,691,824.20/x
  3. Step 3: Cross multiply
    328,028,920.20x = 492,048,629.10 × 85,691,824.20
  4. Step 4: Simplify right side
    328,028,920.20x = 42,164,544,622,688,208
  5. Step 5: Solve for x
    x = 42,164,544,622,688,208/328,028,920.20
  6. Step 6: Final answer
    x = 128,539,107.46

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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.