Home / 538,137,542.80-742,629,780.64-290,618,873.20

Finding the Fourth Proportional to 538,137,542.80, 742,629,780.64 and 290,618,873.20

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Solution

The fourth proportional to 538,137,542.80, 742,629,780.64 and 290,618,873.20 is: 401,054,029.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,137,542.80 : 742,629,780.64 = 290,618,873.20 : x
  2. Step 2: Convert to fraction form
    538,137,542.80/742,629,780.64 = 290,618,873.20/x
  3. Step 3: Cross multiply
    538,137,542.80x = 742,629,780.64 × 290,618,873.20
  4. Step 4: Simplify right side
    538,137,542.80x = 215,822,230,054,359,968
  5. Step 5: Solve for x
    x = 215,822,230,054,359,968/538,137,542.80
  6. Step 6: Final answer
    x = 401,054,029.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.