Home / 419,938,863.40-629,908,295.10-379,124,194.60

Finding the Fourth Proportional to 419,938,863.40, 629,908,295.10 and 379,124,194.60

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Solution

The fourth proportional to 419,938,863.40, 629,908,295.10 and 379,124,194.60 is: 568,686,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,938,863.40 : 629,908,295.10 = 379,124,194.60 : x
  2. Step 2: Convert to fraction form
    419,938,863.40/629,908,295.10 = 379,124,194.60/x
  3. Step 3: Cross multiply
    419,938,863.40x = 629,908,295.10 × 379,124,194.60
  4. Step 4: Simplify right side
    419,938,863.40x = 238,813,475,051,646,656
  5. Step 5: Solve for x
    x = 238,813,475,051,646,656/419,938,863.40
  6. Step 6: Final answer
    x = 568,686,291.90

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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.