Home / 1,279,190,693.60-1,765,288,790.88-692,479,829.60

Finding the Fourth Proportional to 1,279,190,693.60, 1,765,288,790.88 and 692,479,829.60

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Solution

The fourth proportional to 1,279,190,693.60, 1,765,288,790.88 and 692,479,829.60 is: 955,625,214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,190,693.60 : 1,765,288,790.88 = 692,479,829.60 : x
  2. Step 2: Convert to fraction form
    1,279,190,693.60/1,765,288,790.88 = 692,479,829.60/x
  3. Step 3: Cross multiply
    1,279,190,693.60x = 1,765,288,790.88 × 692,479,829.60
  4. Step 4: Simplify right side
    1,279,190,693.60x = 1,222,426,881,103,372,544
  5. Step 5: Solve for x
    x = 1,222,426,881,103,372,544/1,279,190,693.60
  6. Step 6: Final answer
    x = 955,625,214.61

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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.