Home / 431,136,729.20-646,705,093.80-124,438,847.60

Finding the Fourth Proportional to 431,136,729.20, 646,705,093.80 and 124,438,847.60

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Solution

The fourth proportional to 431,136,729.20, 646,705,093.80 and 124,438,847.60 is: 186,658,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,136,729.20 : 646,705,093.80 = 124,438,847.60 : x
  2. Step 2: Convert to fraction form
    431,136,729.20/646,705,093.80 = 124,438,847.60/x
  3. Step 3: Cross multiply
    431,136,729.20x = 646,705,093.80 × 124,438,847.60
  4. Step 4: Simplify right side
    431,136,729.20x = 80,475,236,609,521,888
  5. Step 5: Solve for x
    x = 80,475,236,609,521,888/431,136,729.20
  6. Step 6: Final answer
    x = 186,658,271.40

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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.