Home / 1,311,242,786.40-1,966,963,712.40-391,047,304.80

Finding the Fourth Proportional to 1,311,242,786.40, 1,966,963,712.40 and 391,047,304.80

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Solution

The fourth proportional to 1,311,242,786.40, 1,966,963,712.40 and 391,047,304.80 is: 586,600,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,242,786.40 : 1,966,963,712.40 = 391,047,304.80 : x
  2. Step 2: Convert to fraction form
    1,311,242,786.40/1,966,963,712.40 = 391,047,304.80/x
  3. Step 3: Cross multiply
    1,311,242,786.40x = 1,966,963,712.40 × 391,047,304.80
  4. Step 4: Simplify right side
    1,311,242,786.40x = 769,175,858,373,422,464
  5. Step 5: Solve for x
    x = 769,175,858,373,422,464/1,311,242,786.40
  6. Step 6: Final answer
    x = 586,600,640.52

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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.