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Finding the Fourth Proportional to 395,656,826.56, 545,375,776.48 and 311,888,458.56

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Solution

The fourth proportional to 395,656,826.56, 545,375,776.48 and 311,888,458.56 is: 429,908,948.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,656,826.56 : 545,375,776.48 = 311,888,458.56 : x
  2. Step 2: Convert to fraction form
    395,656,826.56/545,375,776.48 = 311,888,458.56/x
  3. Step 3: Cross multiply
    395,656,826.56x = 545,375,776.48 × 311,888,458.56
  4. Step 4: Simplify right side
    395,656,826.56x = 170,096,410,262,310,304
  5. Step 5: Solve for x
    x = 170,096,410,262,310,304/395,656,826.56
  6. Step 6: Final answer
    x = 429,908,948.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.