Home / 672,014,285.80-1,008,021,428.70-211,998,956.20

Finding the Fourth Proportional to 672,014,285.80, 1,008,021,428.70 and 211,998,956.20

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Solution

The fourth proportional to 672,014,285.80, 1,008,021,428.70 and 211,998,956.20 is: 317,998,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,014,285.80 : 1,008,021,428.70 = 211,998,956.20 : x
  2. Step 2: Convert to fraction form
    672,014,285.80/1,008,021,428.70 = 211,998,956.20/x
  3. Step 3: Cross multiply
    672,014,285.80x = 1,008,021,428.70 × 211,998,956.20
  4. Step 4: Simplify right side
    672,014,285.80x = 213,699,490,711,632,736
  5. Step 5: Solve for x
    x = 213,699,490,711,632,736/672,014,285.80
  6. Step 6: Final answer
    x = 317,998,434.30

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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.