Home / 479,021,860.64-660,450,937.20-399,751,333.76

Finding the Fourth Proportional to 479,021,860.64, 660,450,937.20 and 399,751,333.76

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Solution

The fourth proportional to 479,021,860.64, 660,450,937.20 and 399,751,333.76 is: 551,156,773.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,021,860.64 : 660,450,937.20 = 399,751,333.76 : x
  2. Step 2: Convert to fraction form
    479,021,860.64/660,450,937.20 = 399,751,333.76/x
  3. Step 3: Cross multiply
    479,021,860.64x = 660,450,937.20 × 399,751,333.76
  4. Step 4: Simplify right side
    479,021,860.64x = 264,016,143,028,742,016
  5. Step 5: Solve for x
    x = 264,016,143,028,742,016/479,021,860.64
  6. Step 6: Final answer
    x = 551,156,773.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.