Home / 516,489,644.51-712,749,907.86-281,535,149.72

Finding the Fourth Proportional to 516,489,644.51, 712,749,907.86 and 281,535,149.72

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Solution

The fourth proportional to 516,489,644.51, 712,749,907.86 and 281,535,149.72 is: 388,515,344.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,489,644.51 : 712,749,907.86 = 281,535,149.72 : x
  2. Step 2: Convert to fraction form
    516,489,644.51/712,749,907.86 = 281,535,149.72/x
  3. Step 3: Cross multiply
    516,489,644.51x = 712,749,907.86 × 281,535,149.72
  4. Step 4: Simplify right side
    516,489,644.51x = 200,664,152,022,281,344
  5. Step 5: Solve for x
    x = 200,664,152,022,281,344/516,489,644.51
  6. Step 6: Final answer
    x = 388,515,344.22

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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.