Home / 431,367,448.40-647,051,172.60-407,558,891.60

Finding the Fourth Proportional to 431,367,448.40, 647,051,172.60 and 407,558,891.60

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Solution

The fourth proportional to 431,367,448.40, 647,051,172.60 and 407,558,891.60 is: 611,338,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,367,448.40 : 647,051,172.60 = 407,558,891.60 : x
  2. Step 2: Convert to fraction form
    431,367,448.40/647,051,172.60 = 407,558,891.60/x
  3. Step 3: Cross multiply
    431,367,448.40x = 647,051,172.60 × 407,558,891.60
  4. Step 4: Simplify right side
    431,367,448.40x = 263,711,458,713,336,320
  5. Step 5: Solve for x
    x = 263,711,458,713,336,320/431,367,448.40
  6. Step 6: Final answer
    x = 611,338,337.40

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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.