Home / 640,678,236.69-884,142,925.55-376,371,369.75

Finding the Fourth Proportional to 640,678,236.69, 884,142,925.55 and 376,371,369.75

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Solution

The fourth proportional to 640,678,236.69, 884,142,925.55 and 376,371,369.75 is: 519,396,578.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,678,236.69 : 884,142,925.55 = 376,371,369.75 : x
  2. Step 2: Convert to fraction form
    640,678,236.69/884,142,925.55 = 376,371,369.75/x
  3. Step 3: Cross multiply
    640,678,236.69x = 884,142,925.55 × 376,371,369.75
  4. Step 4: Simplify right side
    640,678,236.69x = 332,766,083,944,025,728
  5. Step 5: Solve for x
    x = 332,766,083,944,025,728/640,678,236.69
  6. Step 6: Final answer
    x = 519,396,578.32

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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.