Home / 1,679,638,916.40-2,519,458,374.60-989,190,769.20

Finding the Fourth Proportional to 1,679,638,916.40, 2,519,458,374.60 and 989,190,769.20

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Solution

The fourth proportional to 1,679,638,916.40, 2,519,458,374.60 and 989,190,769.20 is: 1,483,786,153.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679,638,916.40 : 2,519,458,374.60 = 989,190,769.20 : x
  2. Step 2: Convert to fraction form
    1,679,638,916.40/2,519,458,374.60 = 989,190,769.20/x
  3. Step 3: Cross multiply
    1,679,638,916.40x = 2,519,458,374.60 × 989,190,769.20
  4. Step 4: Simplify right side
    1,679,638,916.40x = 2,492,224,967,537,955,840
  5. Step 5: Solve for x
    x = 2,492,224,967,537,955,840/1,679,638,916.40
  6. Step 6: Final answer
    x = 1,483,786,153.80

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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.