Home / 1,206,804,428.10-1,810,206,642.15-431,325,720.90

Finding the Fourth Proportional to 1,206,804,428.10, 1,810,206,642.15 and 431,325,720.90

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Solution

The fourth proportional to 1,206,804,428.10, 1,810,206,642.15 and 431,325,720.90 is: 646,988,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,804,428.10 : 1,810,206,642.15 = 431,325,720.90 : x
  2. Step 2: Convert to fraction form
    1,206,804,428.10/1,810,206,642.15 = 431,325,720.90/x
  3. Step 3: Cross multiply
    1,206,804,428.10x = 1,810,206,642.15 × 431,325,720.90
  4. Step 4: Simplify right side
    1,206,804,428.10x = 780,788,684,903,317,120
  5. Step 5: Solve for x
    x = 780,788,684,903,317,120/1,206,804,428.10
  6. Step 6: Final answer
    x = 646,988,581.35

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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.