Home / 1,989,436,858.40-2,984,155,287.60-1,868,404,973.60

Finding the Fourth Proportional to 1,989,436,858.40, 2,984,155,287.60 and 1,868,404,973.60

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Solution

The fourth proportional to 1,989,436,858.40, 2,984,155,287.60 and 1,868,404,973.60 is: 2,802,607,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,436,858.40 : 2,984,155,287.60 = 1,868,404,973.60 : x
  2. Step 2: Convert to fraction form
    1,989,436,858.40/2,984,155,287.60 = 1,868,404,973.60/x
  3. Step 3: Cross multiply
    1,989,436,858.40x = 2,984,155,287.60 × 1,868,404,973.60
  4. Step 4: Simplify right side
    1,989,436,858.40x = 5,575,610,581,346,578,432
  5. Step 5: Solve for x
    x = 5,575,610,581,346,578,432/1,989,436,858.40
  6. Step 6: Final answer
    x = 2,802,607,460.40

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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.