Home / 909,660,680-1,255,331,740.40-491,972,965.28

Finding the Fourth Proportional to 909,660,680, 1,255,331,740.40 and 491,972,965.28

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Solution

The fourth proportional to 909,660,680, 1,255,331,740.40 and 491,972,965.28 is: 678,922,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,660,680 : 1,255,331,740.40 = 491,972,965.28 : x
  2. Step 2: Convert to fraction form
    909,660,680/1,255,331,740.40 = 491,972,965.28/x
  3. Step 3: Cross multiply
    909,660,680x = 1,255,331,740.40 × 491,972,965.28
  4. Step 4: Simplify right side
    909,660,680x = 617,589,278,734,691,200
  5. Step 5: Solve for x
    x = 617,589,278,734,691,200/909,660,680
  6. Step 6: Final answer
    x = 678,922,693.17

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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.