Home / 721,607,348.03-995,818,140.32-391,582,487.03

Finding the Fourth Proportional to 721,607,348.03, 995,818,140.32 and 391,582,487.03

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Solution

The fourth proportional to 721,607,348.03, 995,818,140.32 and 391,582,487.03 is: 540,383,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,607,348.03 : 995,818,140.32 = 391,582,487.03 : x
  2. Step 2: Convert to fraction form
    721,607,348.03/995,818,140.32 = 391,582,487.03/x
  3. Step 3: Cross multiply
    721,607,348.03x = 995,818,140.32 × 391,582,487.03
  4. Step 4: Simplify right side
    721,607,348.03x = 389,944,944,015,833,088
  5. Step 5: Solve for x
    x = 389,944,944,015,833,088/721,607,348.03
  6. Step 6: Final answer
    x = 540,383,832.12

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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.