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Finding the Fourth Proportional to 8,978,931.90, 13,470,388.02 and 2,588,685.57

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Solution

The fourth proportional to 8,978,931.90, 13,470,388.02 and 2,588,685.57 is: 3,883,602.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978,931.90 : 13,470,388.02 = 2,588,685.57 : x
  2. Step 2: Convert to fraction form
    8,978,931.90/13,470,388.02 = 2,588,685.57/x
  3. Step 3: Cross multiply
    8,978,931.90x = 13,470,388.02 × 2,588,685.57
  4. Step 4: Simplify right side
    8,978,931.90x = 34,870,599,089,674.87
  5. Step 5: Solve for x
    x = 34,870,599,089,674.87/8,978,931.90
  6. Step 6: Final answer
    x = 3,883,602.13

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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.