Home / 648,238,086.72-972,511,819.97-211,539,583.36

Finding the Fourth Proportional to 648,238,086.72, 972,511,819.97 and 211,539,583.36

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Solution

The fourth proportional to 648,238,086.72, 972,511,819.97 and 211,539,583.36 is: 317,359,855.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,238,086.72 : 972,511,819.97 = 211,539,583.36 : x
  2. Step 2: Convert to fraction form
    648,238,086.72/972,511,819.97 = 211,539,583.36/x
  3. Step 3: Cross multiply
    648,238,086.72x = 972,511,819.97 × 211,539,583.36
  4. Step 4: Simplify right side
    648,238,086.72x = 205,724,745,209,129,152
  5. Step 5: Solve for x
    x = 205,724,745,209,129,152/648,238,086.72
  6. Step 6: Final answer
    x = 317,359,855.00

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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.