Home / 786,343,727.44-1,178,824,656.21-320,396,962.66

Finding the Fourth Proportional to 786,343,727.44, 1,178,824,656.21 and 320,396,962.66

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Solution

The fourth proportional to 786,343,727.44, 1,178,824,656.21 and 320,396,962.66 is: 480,313,921.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,343,727.44 : 1,178,824,656.21 = 320,396,962.66 : x
  2. Step 2: Convert to fraction form
    786,343,727.44/1,178,824,656.21 = 320,396,962.66/x
  3. Step 3: Cross multiply
    786,343,727.44x = 1,178,824,656.21 × 320,396,962.66
  4. Step 4: Simplify right side
    786,343,727.44x = 377,691,839,358,402,752
  5. Step 5: Solve for x
    x = 377,691,839,358,402,752/786,343,727.44
  6. Step 6: Final answer
    x = 480,313,921.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.