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Finding the Fourth Proportional to 8,990,019.40, 13,485,029.10 and 8,934,032.20

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Solution

The fourth proportional to 8,990,019.40, 13,485,029.10 and 8,934,032.20 is: 13,401,048.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990,019.40 : 13,485,029.10 = 8,934,032.20 : x
  2. Step 2: Convert to fraction form
    8,990,019.40/13,485,029.10 = 8,934,032.20/x
  3. Step 3: Cross multiply
    8,990,019.40x = 13,485,029.10 × 8,934,032.20
  4. Step 4: Simplify right side
    8,990,019.40x = 120,475,684,197,337
  5. Step 5: Solve for x
    x = 120,475,684,197,337/8,990,019.40
  6. Step 6: Final answer
    x = 13,401,048.30

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Similar ratio
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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.