Home / 642,166,243.78-886,262,930.24-359,984,898.26

Finding the Fourth Proportional to 642,166,243.78, 886,262,930.24 and 359,984,898.26

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Solution

The fourth proportional to 642,166,243.78, 886,262,930.24 and 359,984,898.26 is: 496,820,369.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,166,243.78 : 886,262,930.24 = 359,984,898.26 : x
  2. Step 2: Convert to fraction form
    642,166,243.78/886,262,930.24 = 359,984,898.26/x
  3. Step 3: Cross multiply
    642,166,243.78x = 886,262,930.24 × 359,984,898.26
  4. Step 4: Simplify right side
    642,166,243.78x = 319,041,270,774,055,872
  5. Step 5: Solve for x
    x = 319,041,270,774,055,872/642,166,243.78
  6. Step 6: Final answer
    x = 496,820,369.90

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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.