Home / 648,238,080.82-972,511,811.16-211,539,577.47

Finding the Fourth Proportional to 648,238,080.82, 972,511,811.16 and 211,539,577.47

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Solution

The fourth proportional to 648,238,080.82, 972,511,811.16 and 211,539,577.47 is: 317,359,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,238,080.82 : 972,511,811.16 = 211,539,577.47 : x
  2. Step 2: Convert to fraction form
    648,238,080.82/972,511,811.16 = 211,539,577.47/x
  3. Step 3: Cross multiply
    648,238,080.82x = 972,511,811.16 × 211,539,577.47
  4. Step 4: Simplify right side
    648,238,080.82x = 205,724,737,618,396,160
  5. Step 5: Solve for x
    x = 205,724,737,618,396,160/648,238,080.82
  6. Step 6: Final answer
    x = 317,359,846.18

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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.