Home / 721,713,188.77-995,964,614.84-391,688,327.77

Finding the Fourth Proportional to 721,713,188.77, 995,964,614.84 and 391,688,327.77

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Solution

The fourth proportional to 721,713,188.77, 995,964,614.84 and 391,688,327.77 is: 540,530,117.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,713,188.77 : 995,964,614.84 = 391,688,327.77 : x
  2. Step 2: Convert to fraction form
    721,713,188.77/995,964,614.84 = 391,688,327.77/x
  3. Step 3: Cross multiply
    721,713,188.77x = 995,964,614.84 × 391,688,327.77
  4. Step 4: Simplify right side
    721,713,188.77x = 390,107,714,503,260,992
  5. Step 5: Solve for x
    x = 390,107,714,503,260,992/721,713,188.77
  6. Step 6: Final answer
    x = 540,530,117.19

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Double scale
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1.5x scale

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.