Home / 722,236,513.92-996,991,492.78-487,604,984.38

Finding the Fourth Proportional to 722,236,513.92, 996,991,492.78 and 487,604,984.38

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Solution

The fourth proportional to 722,236,513.92, 996,991,492.78 and 487,604,984.38 is: 673,100,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,236,513.92 : 996,991,492.78 = 487,604,984.38 : x
  2. Step 2: Convert to fraction form
    722,236,513.92/996,991,492.78 = 487,604,984.38/x
  3. Step 3: Cross multiply
    722,236,513.92x = 996,991,492.78 × 487,604,984.38
  4. Step 4: Simplify right side
    722,236,513.92x = 486,138,021,263,984,768
  5. Step 5: Solve for x
    x = 486,138,021,263,984,768/722,236,513.92
  6. Step 6: Final answer
    x = 673,100,863.63

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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.