Home / 660,690,536.45-911,494,890.36-378,282,046.84

Finding the Fourth Proportional to 660,690,536.45, 911,494,890.36 and 378,282,046.84

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Solution

The fourth proportional to 660,690,536.45, 911,494,890.36 and 378,282,046.84 is: 521,881,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,690,536.45 : 911,494,890.36 = 378,282,046.84 : x
  2. Step 2: Convert to fraction form
    660,690,536.45/911,494,890.36 = 378,282,046.84/x
  3. Step 3: Cross multiply
    660,690,536.45x = 911,494,890.36 × 378,282,046.84
  4. Step 4: Simplify right side
    660,690,536.45x = 344,802,152,805,024,704
  5. Step 5: Solve for x
    x = 344,802,152,805,024,704/660,690,536.45
  6. Step 6: Final answer
    x = 521,881,476.70

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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.