Home / 721,628,360.24-995,847,128.60-391,603,499.24

Finding the Fourth Proportional to 721,628,360.24, 995,847,128.60 and 391,603,499.24

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Solution

The fourth proportional to 721,628,360.24, 995,847,128.60 and 391,603,499.24 is: 540,412,824.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,628,360.24 : 995,847,128.60 = 391,603,499.24 : x
  2. Step 2: Convert to fraction form
    721,628,360.24/995,847,128.60 = 391,603,499.24/x
  3. Step 3: Cross multiply
    721,628,360.24x = 995,847,128.60 × 391,603,499.24
  4. Step 4: Simplify right side
    721,628,360.24x = 389,977,220,260,929,024
  5. Step 5: Solve for x
    x = 389,977,220,260,929,024/721,628,360.24
  6. Step 6: Final answer
    x = 540,412,824.32

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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.