Home / 909,660,672-1,255,331,729.36-491,972,957.28

Finding the Fourth Proportional to 909,660,672, 1,255,331,729.36 and 491,972,957.28

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Solution

The fourth proportional to 909,660,672, 1,255,331,729.36 and 491,972,957.28 is: 678,922,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,660,672 : 1,255,331,729.36 = 491,972,957.28 : x
  2. Step 2: Convert to fraction form
    909,660,672/1,255,331,729.36 = 491,972,957.28/x
  3. Step 3: Cross multiply
    909,660,672x = 1,255,331,729.36 × 491,972,957.28
  4. Step 4: Simplify right side
    909,660,672x = 617,589,263,260,655,744
  5. Step 5: Solve for x
    x = 617,589,263,260,655,744/909,660,672
  6. Step 6: Final answer
    x = 678,922,682.13

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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.