Home / 642,165,243-886,261,550.40-359,983,897.48

Finding the Fourth Proportional to 642,165,243, 886,261,550.40 and 359,983,897.48

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Solution

The fourth proportional to 642,165,243, 886,261,550.40 and 359,983,897.48 is: 496,818,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,165,243 : 886,261,550.40 = 359,983,897.48 : x
  2. Step 2: Convert to fraction form
    642,165,243/886,261,550.40 = 359,983,897.48/x
  3. Step 3: Cross multiply
    642,165,243x = 886,261,550.40 × 359,983,897.48
  4. Step 4: Simplify right side
    642,165,243x = 319,039,887,099,659,456
  5. Step 5: Solve for x
    x = 319,039,887,099,659,456/642,165,243
  6. Step 6: Final answer
    x = 496,818,989.47

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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.