Home / 1,284,780,016.08-1,772,990,253.36-727,861,749.12

Finding the Fourth Proportional to 1,284,780,016.08, 1,772,990,253.36 and 727,861,749.12

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Solution

The fourth proportional to 1,284,780,016.08, 1,772,990,253.36 and 727,861,749.12 is: 1,004,445,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,780,016.08 : 1,772,990,253.36 = 727,861,749.12 : x
  2. Step 2: Convert to fraction form
    1,284,780,016.08/1,772,990,253.36 = 727,861,749.12/x
  3. Step 3: Cross multiply
    1,284,780,016.08x = 1,772,990,253.36 × 727,861,749.12
  4. Step 4: Simplify right side
    1,284,780,016.08x = 1,290,491,786,983,321,600
  5. Step 5: Solve for x
    x = 1,290,491,786,983,321,600/1,284,780,016.08
  6. Step 6: Final answer
    x = 1,004,445,718.98

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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.