Home / 420,060,531.48-579,692,812.92-231,888,379.68

Finding the Fourth Proportional to 420,060,531.48, 579,692,812.92 and 231,888,379.68

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Solution

The fourth proportional to 420,060,531.48, 579,692,812.92 and 231,888,379.68 is: 320,011,086.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,060,531.48 : 579,692,812.92 = 231,888,379.68 : x
  2. Step 2: Convert to fraction form
    420,060,531.48/579,692,812.92 = 231,888,379.68/x
  3. Step 3: Cross multiply
    420,060,531.48x = 579,692,812.92 × 231,888,379.68
  4. Step 4: Simplify right side
    420,060,531.48x = 134,424,027,100,160,160
  5. Step 5: Solve for x
    x = 134,424,027,100,160,160/420,060,531.48
  6. Step 6: Final answer
    x = 320,011,086.56

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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.