Home / 408,089,660.80-612,134,491.20-392,217,289.60

Finding the Fourth Proportional to 408,089,660.80, 612,134,491.20 and 392,217,289.60

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Solution

The fourth proportional to 408,089,660.80, 612,134,491.20 and 392,217,289.60 is: 588,325,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,089,660.80 : 612,134,491.20 = 392,217,289.60 : x
  2. Step 2: Convert to fraction form
    408,089,660.80/612,134,491.20 = 392,217,289.60/x
  3. Step 3: Cross multiply
    408,089,660.80x = 612,134,491.20 × 392,217,289.60
  4. Step 4: Simplify right side
    408,089,660.80x = 240,089,731,009,139,072
  5. Step 5: Solve for x
    x = 240,089,731,009,139,072/408,089,660.80
  6. Step 6: Final answer
    x = 588,325,934.40

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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.