Home / 1,242,171,629.40-1,861,674,930.90-660,184,685.40

Finding the Fourth Proportional to 1,242,171,629.40, 1,861,674,930.90 and 660,184,685.40

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Solution

The fourth proportional to 1,242,171,629.40, 1,861,674,930.90 and 660,184,685.40 is: 989,435,959.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,171,629.40 : 1,861,674,930.90 = 660,184,685.40 : x
  2. Step 2: Convert to fraction form
    1,242,171,629.40/1,861,674,930.90 = 660,184,685.40/x
  3. Step 3: Cross multiply
    1,242,171,629.40x = 1,861,674,930.90 × 660,184,685.40
  4. Step 4: Simplify right side
    1,242,171,629.40x = 1,229,049,278,573,283,328
  5. Step 5: Solve for x
    x = 1,229,049,278,573,283,328/1,242,171,629.40
  6. Step 6: Final answer
    x = 989,435,959.96

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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.