Home / 12,990,438-19,485,737.64-3,405,730.32

Finding the Fourth Proportional to 12,990,438, 19,485,737.64 and 3,405,730.32

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Solution

The fourth proportional to 12,990,438, 19,485,737.64 and 3,405,730.32 is: 5,108,616.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990,438 : 19,485,737.64 = 3,405,730.32 : x
  2. Step 2: Convert to fraction form
    12,990,438/19,485,737.64 = 3,405,730.32/x
  3. Step 3: Cross multiply
    12,990,438x = 19,485,737.64 × 3,405,730.32
  4. Step 4: Simplify right side
    12,990,438x = 66,363,167,488,113.24
  5. Step 5: Solve for x
    x = 66,363,167,488,113.24/12,990,438
  6. Step 6: Final answer
    x = 5,108,616.62

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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.