Home / 672,014,299.80-1,008,021,449.70-211,998,970.20

Finding the Fourth Proportional to 672,014,299.80, 1,008,021,449.70 and 211,998,970.20

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Solution

The fourth proportional to 672,014,299.80, 1,008,021,449.70 and 211,998,970.20 is: 317,998,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,014,299.80 : 1,008,021,449.70 = 211,998,970.20 : x
  2. Step 2: Convert to fraction form
    672,014,299.80/1,008,021,449.70 = 211,998,970.20/x
  3. Step 3: Cross multiply
    672,014,299.80x = 1,008,021,449.70 × 211,998,970.20
  4. Step 4: Simplify right side
    672,014,299.80x = 213,699,509,275,911,104
  5. Step 5: Solve for x
    x = 213,699,509,275,911,104/672,014,299.80
  6. Step 6: Final answer
    x = 317,998,455.30

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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.