Home / 6,912,021.20-10,368,031.80-6,439,629.20

Finding the Fourth Proportional to 6,912,021.20, 10,368,031.80 and 6,439,629.20

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Solution

The fourth proportional to 6,912,021.20, 10,368,031.80 and 6,439,629.20 is: 9,659,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912,021.20 : 10,368,031.80 = 6,439,629.20 : x
  2. Step 2: Convert to fraction form
    6,912,021.20/10,368,031.80 = 6,439,629.20/x
  3. Step 3: Cross multiply
    6,912,021.20x = 10,368,031.80 × 6,439,629.20
  4. Step 4: Simplify right side
    6,912,021.20x = 66,766,280,325,808.57
  5. Step 5: Solve for x
    x = 66,766,280,325,808.57/6,912,021.20
  6. Step 6: Final answer
    x = 9,659,443.80

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1.5x scale

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.