Home / 7,365,600,720.43-10,164,533,071.77-3,978,509,992.72

Finding the Fourth Proportional to 7,365,600,720.43, 10,164,533,071.77 and 3,978,509,992.72

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Solution

The fourth proportional to 7,365,600,720.43, 10,164,533,071.77 and 3,978,509,992.72 is: 5,490,345,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,365,600,720.43 : 10,164,533,071.77 = 3,978,509,992.72 : x
  2. Step 2: Convert to fraction form
    7,365,600,720.43/10,164,533,071.77 = 3,978,509,992.72/x
  3. Step 3: Cross multiply
    7,365,600,720.43x = 10,164,533,071.77 × 3,978,509,992.72
  4. Step 4: Simplify right side
    7,365,600,720.43x = 40,439,696,397,324,558,336
  5. Step 5: Solve for x
    x = 40,439,696,397,324,558,336/7,365,600,720.43
  6. Step 6: Final answer
    x = 5,490,345,992.44

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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.