Home / 516,489,669.48-712,749,942.36-281,535,174.72

Finding the Fourth Proportional to 516,489,669.48, 712,749,942.36 and 281,535,174.72

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Solution

The fourth proportional to 516,489,669.48, 712,749,942.36 and 281,535,174.72 is: 388,515,378.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,489,669.48 : 712,749,942.36 = 281,535,174.72 : x
  2. Step 2: Convert to fraction form
    516,489,669.48/712,749,942.36 = 281,535,174.72/x
  3. Step 3: Cross multiply
    516,489,669.48x = 712,749,942.36 × 281,535,174.72
  4. Step 4: Simplify right side
    516,489,669.48x = 200,664,179,553,992,544
  5. Step 5: Solve for x
    x = 200,664,179,553,992,544/516,489,669.48
  6. Step 6: Final answer
    x = 388,515,378.74

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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.