Home / 413,743,803.20-620,615,704.80-378,807,790.40

Finding the Fourth Proportional to 413,743,803.20, 620,615,704.80 and 378,807,790.40

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Solution

The fourth proportional to 413,743,803.20, 620,615,704.80 and 378,807,790.40 is: 568,211,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,743,803.20 : 620,615,704.80 = 378,807,790.40 : x
  2. Step 2: Convert to fraction form
    413,743,803.20/620,615,704.80 = 378,807,790.40/x
  3. Step 3: Cross multiply
    413,743,803.20x = 620,615,704.80 × 378,807,790.40
  4. Step 4: Simplify right side
    413,743,803.20x = 235,094,063,822,826,656
  5. Step 5: Solve for x
    x = 235,094,063,822,826,656/413,743,803.20
  6. Step 6: Final answer
    x = 568,211,685.60

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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.