Home / 909,660,663.98-1,255,331,718.28-491,972,949.26

Finding the Fourth Proportional to 909,660,663.98, 1,255,331,718.28 and 491,972,949.26

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Solution

The fourth proportional to 909,660,663.98, 1,255,331,718.28 and 491,972,949.26 is: 678,922,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,660,663.98 : 1,255,331,718.28 = 491,972,949.26 : x
  2. Step 2: Convert to fraction form
    909,660,663.98/1,255,331,718.28 = 491,972,949.26/x
  3. Step 3: Cross multiply
    909,660,663.98x = 1,255,331,718.28 × 491,972,949.26
  4. Step 4: Simplify right side
    909,660,663.98x = 617,589,247,741,835,008
  5. Step 5: Solve for x
    x = 617,589,247,741,835,008/909,660,663.98
  6. Step 6: Final answer
    x = 678,922,671.05

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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.