Home / 909,660,667.98-1,255,331,723.80-491,972,953.26

Finding the Fourth Proportional to 909,660,667.98, 1,255,331,723.80 and 491,972,953.26

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Solution

The fourth proportional to 909,660,667.98, 1,255,331,723.80 and 491,972,953.26 is: 678,922,676.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,660,667.98 : 1,255,331,723.80 = 491,972,953.26 : x
  2. Step 2: Convert to fraction form
    909,660,667.98/1,255,331,723.80 = 491,972,953.26/x
  3. Step 3: Cross multiply
    909,660,667.98x = 1,255,331,723.80 × 491,972,953.26
  4. Step 4: Simplify right side
    909,660,667.98x = 617,589,255,478,852,608
  5. Step 5: Solve for x
    x = 617,589,255,478,852,608/909,660,667.98
  6. Step 6: Final answer
    x = 678,922,676.57

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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.