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Finding the Fourth Proportional to 19,985,112, 29,978,497.44 and 5,801,688

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Solution

The fourth proportional to 19,985,112, 29,978,497.44 and 5,801,688 is: 8,702,772.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985,112 : 29,978,497.44 = 5,801,688 : x
  2. Step 2: Convert to fraction form
    19,985,112/29,978,497.44 = 5,801,688/x
  3. Step 3: Cross multiply
    19,985,112x = 29,978,497.44 × 5,801,688
  4. Step 4: Simplify right side
    19,985,112x = 173,925,888,855,678.72
  5. Step 5: Solve for x
    x = 173,925,888,855,678.72/19,985,112
  6. Step 6: Final answer
    x = 8,702,772.79

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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.