Home / 516,489,645.51-712,749,909.24-281,535,150.72

Finding the Fourth Proportional to 516,489,645.51, 712,749,909.24 and 281,535,150.72

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Solution

The fourth proportional to 516,489,645.51, 712,749,909.24 and 281,535,150.72 is: 388,515,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,489,645.51 : 712,749,909.24 = 281,535,150.72 : x
  2. Step 2: Convert to fraction form
    516,489,645.51/712,749,909.24 = 281,535,150.72/x
  3. Step 3: Cross multiply
    516,489,645.51x = 712,749,909.24 × 281,535,150.72
  4. Step 4: Simplify right side
    516,489,645.51x = 200,664,153,123,549,728
  5. Step 5: Solve for x
    x = 200,664,153,123,549,728/516,489,645.51
  6. Step 6: Final answer
    x = 388,515,345.60

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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.