Home / 405,980,573.78-560,253,732.45-220,341,589.47

Finding the Fourth Proportional to 405,980,573.78, 560,253,732.45 and 220,341,589.47

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Solution

The fourth proportional to 405,980,573.78, 560,253,732.45 and 220,341,589.47 is: 304,071,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,980,573.78 : 560,253,732.45 = 220,341,589.47 : x
  2. Step 2: Convert to fraction form
    405,980,573.78/560,253,732.45 = 220,341,589.47/x
  3. Step 3: Cross multiply
    405,980,573.78x = 560,253,732.45 × 220,341,589.47
  4. Step 4: Simplify right side
    405,980,573.78x = 123,447,197,913,704,624
  5. Step 5: Solve for x
    x = 123,447,197,913,704,624/405,980,573.78
  6. Step 6: Final answer
    x = 304,071,686.89

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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.