Home / 1,433,847.76-1,978,478.36-821,887.90

Finding the Fourth Proportional to 1,433,847.76, 1,978,478.36 and 821,887.90

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Solution

The fourth proportional to 1,433,847.76, 1,978,478.36 and 821,887.90 is: 1,134,072.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,847.76 : 1,978,478.36 = 821,887.90 : x
  2. Step 2: Convert to fraction form
    1,433,847.76/1,978,478.36 = 821,887.90/x
  3. Step 3: Cross multiply
    1,433,847.76x = 1,978,478.36 × 821,887.90
  4. Step 4: Simplify right side
    1,433,847.76x = 1,626,087,418,522.29
  5. Step 5: Solve for x
    x = 1,626,087,418,522.29/1,433,847.76
  6. Step 6: Final answer
    x = 1,134,072.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.