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Finding the Fourth Proportional to 1,329,696,522.90, 1,994,544,784.35 and 839,920,497.30

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Solution

The fourth proportional to 1,329,696,522.90, 1,994,544,784.35 and 839,920,497.30 is: 1,259,880,745.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,696,522.90 : 1,994,544,784.35 = 839,920,497.30 : x
  2. Step 2: Convert to fraction form
    1,329,696,522.90/1,994,544,784.35 = 839,920,497.30/x
  3. Step 3: Cross multiply
    1,329,696,522.90x = 1,994,544,784.35 × 839,920,497.30
  4. Step 4: Simplify right side
    1,329,696,522.90x = 1,675,259,047,158,373,120
  5. Step 5: Solve for x
    x = 1,675,259,047,158,373,120/1,329,696,522.90
  6. Step 6: Final answer
    x = 1,259,880,745.95

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Double scale
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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.