Home / 1,292,296,397.85-1,938,484,028.52-505,318,619.61

Finding the Fourth Proportional to 1,292,296,397.85, 1,938,484,028.52 and 505,318,619.61

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Solution

The fourth proportional to 1,292,296,397.85, 1,938,484,028.52 and 505,318,619.61 is: 757,993,348.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,296,397.85 : 1,938,484,028.52 = 505,318,619.61 : x
  2. Step 2: Convert to fraction form
    1,292,296,397.85/1,938,484,028.52 = 505,318,619.61/x
  3. Step 3: Cross multiply
    1,292,296,397.85x = 1,938,484,028.52 × 505,318,619.61
  4. Step 4: Simplify right side
    1,292,296,397.85x = 979,552,073,427,758,336
  5. Step 5: Solve for x
    x = 979,552,073,427,758,336/1,292,296,397.85
  6. Step 6: Final answer
    x = 757,993,348.16

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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.