Home / 1,679,642,681.40-2,519,464,022.10-1,328,938,860.60

Finding the Fourth Proportional to 1,679,642,681.40, 2,519,464,022.10 and 1,328,938,860.60

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Solution

The fourth proportional to 1,679,642,681.40, 2,519,464,022.10 and 1,328,938,860.60 is: 1,993,408,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679,642,681.40 : 2,519,464,022.10 = 1,328,938,860.60 : x
  2. Step 2: Convert to fraction form
    1,679,642,681.40/2,519,464,022.10 = 1,328,938,860.60/x
  3. Step 3: Cross multiply
    1,679,642,681.40x = 2,519,464,022.10 × 1,328,938,860.60
  4. Step 4: Simplify right side
    1,679,642,681.40x = 3,348,213,646,852,267,008
  5. Step 5: Solve for x
    x = 3,348,213,646,852,267,008/1,679,642,681.40
  6. Step 6: Final answer
    x = 1,993,408,290.90

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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.