Home / 520,303,318.35-718,063,987.60-285,399,379.48

Finding the Fourth Proportional to 520,303,318.35, 718,063,987.60 and 285,399,379.48

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Solution

The fourth proportional to 520,303,318.35, 718,063,987.60 and 285,399,379.48 is: 393,876,051.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,303,318.35 : 718,063,987.60 = 285,399,379.48 : x
  2. Step 2: Convert to fraction form
    520,303,318.35/718,063,987.60 = 285,399,379.48/x
  3. Step 3: Cross multiply
    520,303,318.35x = 718,063,987.60 × 285,399,379.48
  4. Step 4: Simplify right side
    520,303,318.35x = 204,935,016,487,974,432
  5. Step 5: Solve for x
    x = 204,935,016,487,974,432/520,303,318.35
  6. Step 6: Final answer
    x = 393,876,051.26

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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.