Home / 721,607,135.40-995,817,846.96-391,582,274.40

Finding the Fourth Proportional to 721,607,135.40, 995,817,846.96 and 391,582,274.40

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Solution

The fourth proportional to 721,607,135.40, 995,817,846.96 and 391,582,274.40 is: 540,383,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,607,135.40 : 995,817,846.96 = 391,582,274.40 : x
  2. Step 2: Convert to fraction form
    721,607,135.40/995,817,846.96 = 391,582,274.40/x
  3. Step 3: Cross multiply
    721,607,135.40x = 995,817,846.96 × 391,582,274.40
  4. Step 4: Simplify right side
    721,607,135.40x = 389,944,617,400,707,904
  5. Step 5: Solve for x
    x = 389,944,617,400,707,904/721,607,135.40
  6. Step 6: Final answer
    x = 540,383,538.73

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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.