Home / 1,638,461,689.30-2,458,542,839.55-718,431,030.10

Finding the Fourth Proportional to 1,638,461,689.30, 2,458,542,839.55 and 718,431,030.10

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Solution

The fourth proportional to 1,638,461,689.30, 2,458,542,839.55 and 718,431,030.10 is: 1,078,019,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,461,689.30 : 2,458,542,839.55 = 718,431,030.10 : x
  2. Step 2: Convert to fraction form
    1,638,461,689.30/2,458,542,839.55 = 718,431,030.10/x
  3. Step 3: Cross multiply
    1,638,461,689.30x = 2,458,542,839.55 × 718,431,030.10
  4. Step 4: Simplify right side
    1,638,461,689.30x = 1,766,293,464,762,885,632
  5. Step 5: Solve for x
    x = 1,766,293,464,762,885,632/1,638,461,689.30
  6. Step 6: Final answer
    x = 1,078,019,386.29

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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.