Home / 986,112.80-1,479,169.20-947,405.60

Finding the Fourth Proportional to 986,112.80, 1,479,169.20 and 947,405.60

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Solution

The fourth proportional to 986,112.80, 1,479,169.20 and 947,405.60 is: 1,421,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,112.80 : 1,479,169.20 = 947,405.60 : x
  2. Step 2: Convert to fraction form
    986,112.80/1,479,169.20 = 947,405.60/x
  3. Step 3: Cross multiply
    986,112.80x = 1,479,169.20 × 947,405.60
  4. Step 4: Simplify right side
    986,112.80x = 1,401,373,183,427.52
  5. Step 5: Solve for x
    x = 1,401,373,183,427.52/986,112.80
  6. Step 6: Final answer
    x = 1,421,108.40

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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.