Home / 1,989,436,869.90-2,984,155,304.85-1,868,404,985.10

Finding the Fourth Proportional to 1,989,436,869.90, 2,984,155,304.85 and 1,868,404,985.10

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Solution

The fourth proportional to 1,989,436,869.90, 2,984,155,304.85 and 1,868,404,985.10 is: 2,802,607,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,436,869.90 : 2,984,155,304.85 = 1,868,404,985.10 : x
  2. Step 2: Convert to fraction form
    1,989,436,869.90/2,984,155,304.85 = 1,868,404,985.10/x
  3. Step 3: Cross multiply
    1,989,436,869.90x = 2,984,155,304.85 × 1,868,404,985.10
  4. Step 4: Simplify right side
    1,989,436,869.90x = 5,575,610,647,894,349,824
  5. Step 5: Solve for x
    x = 5,575,610,647,894,349,824/1,989,436,869.90
  6. Step 6: Final answer
    x = 2,802,607,477.65

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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.