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Finding the Fourth Proportional to 10,978,554.60, 16,467,831.90 and 3,000,378.60

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Solution

The fourth proportional to 10,978,554.60, 16,467,831.90 and 3,000,378.60 is: 4,500,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,978,554.60 : 16,467,831.90 = 3,000,378.60 : x
  2. Step 2: Convert to fraction form
    10,978,554.60/16,467,831.90 = 3,000,378.60/x
  3. Step 3: Cross multiply
    10,978,554.60x = 16,467,831.90 × 3,000,378.60
  4. Step 4: Simplify right side
    10,978,554.60x = 49,409,730,421,157.34
  5. Step 5: Solve for x
    x = 49,409,730,421,157.34/10,978,554.60
  6. Step 6: Final answer
    x = 4,500,567.90

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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.