Home / 1,399,468,458.50-1,931,253,758.31-764,388,818.21

Finding the Fourth Proportional to 1,399,468,458.50, 1,931,253,758.31 and 764,388,818.21

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Solution

The fourth proportional to 1,399,468,458.50, 1,931,253,758.31 and 764,388,818.21 is: 1,054,849,624.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,468,458.50 : 1,931,253,758.31 = 764,388,818.21 : x
  2. Step 2: Convert to fraction form
    1,399,468,458.50/1,931,253,758.31 = 764,388,818.21/x
  3. Step 3: Cross multiply
    1,399,468,458.50x = 1,931,253,758.31 × 764,388,818.21
  4. Step 4: Simplify right side
    1,399,468,458.50x = 1,476,228,777,981,577,728
  5. Step 5: Solve for x
    x = 1,476,228,777,981,577,728/1,399,468,458.50
  6. Step 6: Final answer
    x = 1,054,849,624.52

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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.