Home / 12,619,386.40-18,929,079.60-4,100,000.80

Finding the Fourth Proportional to 12,619,386.40, 18,929,079.60 and 4,100,000.80

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Solution

The fourth proportional to 12,619,386.40, 18,929,079.60 and 4,100,000.80 is: 6,150,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619,386.40 : 18,929,079.60 = 4,100,000.80 : x
  2. Step 2: Convert to fraction form
    12,619,386.40/18,929,079.60 = 4,100,000.80/x
  3. Step 3: Cross multiply
    12,619,386.40x = 18,929,079.60 × 4,100,000.80
  4. Step 4: Simplify right side
    12,619,386.40x = 77,609,241,503,263.69
  5. Step 5: Solve for x
    x = 77,609,241,503,263.69/12,619,386.40
  6. Step 6: Final answer
    x = 6,150,001.20

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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.