Home / 439,776,005.80-659,664,008.70-419,620,613.80

Finding the Fourth Proportional to 439,776,005.80, 659,664,008.70 and 419,620,613.80

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Solution

The fourth proportional to 439,776,005.80, 659,664,008.70 and 419,620,613.80 is: 629,430,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,776,005.80 : 659,664,008.70 = 419,620,613.80 : x
  2. Step 2: Convert to fraction form
    439,776,005.80/659,664,008.70 = 419,620,613.80/x
  3. Step 3: Cross multiply
    439,776,005.80x = 659,664,008.70 × 419,620,613.80
  4. Step 4: Simplify right side
    439,776,005.80x = 276,808,616,232,462,560
  5. Step 5: Solve for x
    x = 276,808,616,232,462,560/439,776,005.80
  6. Step 6: Final answer
    x = 629,430,920.70

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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.