Home / 12,712,379.40-19,061,570.70-4,188,328.20

Finding the Fourth Proportional to 12,712,379.40, 19,061,570.70 and 4,188,328.20

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Solution

The fourth proportional to 12,712,379.40, 19,061,570.70 and 4,188,328.20 is: 6,280,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712,379.40 : 19,061,570.70 = 4,188,328.20 : x
  2. Step 2: Convert to fraction form
    12,712,379.40/19,061,570.70 = 4,188,328.20/x
  3. Step 3: Cross multiply
    12,712,379.40x = 19,061,570.70 × 4,188,328.20
  4. Step 4: Simplify right side
    12,712,379.40x = 79,836,114,099,103.73
  5. Step 5: Solve for x
    x = 79,836,114,099,103.73/12,712,379.40
  6. Step 6: Final answer
    x = 6,280,186.55

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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.