Home / 431,367,447.40-647,051,171.10-407,558,890.60

Finding the Fourth Proportional to 431,367,447.40, 647,051,171.10 and 407,558,890.60

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Solution

The fourth proportional to 431,367,447.40, 647,051,171.10 and 407,558,890.60 is: 611,338,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,367,447.40 : 647,051,171.10 = 407,558,890.60 : x
  2. Step 2: Convert to fraction form
    431,367,447.40/647,051,171.10 = 407,558,890.60/x
  3. Step 3: Cross multiply
    431,367,447.40x = 647,051,171.10 × 407,558,890.60
  4. Step 4: Simplify right side
    431,367,447.40x = 263,711,457,454,946,816
  5. Step 5: Solve for x
    x = 263,711,457,454,946,816/431,367,447.40
  6. Step 6: Final answer
    x = 611,338,335.90

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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.