Home / 1,298,065,817.94-1,791,948,522.51-869,640,805.86

Finding the Fourth Proportional to 1,298,065,817.94, 1,791,948,522.51 and 869,640,805.86

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Solution

The fourth proportional to 1,298,065,817.94, 1,791,948,522.51 and 869,640,805.86 is: 1,200,518,136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,065,817.94 : 1,791,948,522.51 = 869,640,805.86 : x
  2. Step 2: Convert to fraction form
    1,298,065,817.94/1,791,948,522.51 = 869,640,805.86/x
  3. Step 3: Cross multiply
    1,298,065,817.94x = 1,791,948,522.51 × 869,640,805.86
  4. Step 4: Simplify right side
    1,298,065,817.94x = 1,558,351,557,175,232,768
  5. Step 5: Solve for x
    x = 1,558,351,557,175,232,768/1,298,065,817.94
  6. Step 6: Final answer
    x = 1,200,518,136.78

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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.