Home / 405,985,781.89-560,265,753.80-220,349,022.85

Finding the Fourth Proportional to 405,985,781.89, 560,265,753.80 and 220,349,022.85

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Solution

The fourth proportional to 405,985,781.89, 560,265,753.80 and 220,349,022.85 is: 304,084,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,985,781.89 : 560,265,753.80 = 220,349,022.85 : x
  2. Step 2: Convert to fraction form
    405,985,781.89/560,265,753.80 = 220,349,022.85/x
  3. Step 3: Cross multiply
    405,985,781.89x = 560,265,753.80 × 220,349,022.85
  4. Step 4: Simplify right side
    405,985,781.89x = 123,454,011,382,245,584
  5. Step 5: Solve for x
    x = 123,454,011,382,245,584/405,985,781.89
  6. Step 6: Final answer
    x = 304,084,568.70

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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.