Home / 1,433,820.76-1,978,441.12-821,860.91

Finding the Fourth Proportional to 1,433,820.76, 1,978,441.12 and 821,860.91

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Solution

The fourth proportional to 1,433,820.76, 1,978,441.12 and 821,860.91 is: 1,134,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,820.76 : 1,978,441.12 = 821,860.91 : x
  2. Step 2: Convert to fraction form
    1,433,820.76/1,978,441.12 = 821,860.91/x
  3. Step 3: Cross multiply
    1,433,820.76x = 1,978,441.12 × 821,860.91
  4. Step 4: Simplify right side
    1,433,820.76x = 1,626,003,424,324.66
  5. Step 5: Solve for x
    x = 1,626,003,424,324.66/1,433,820.76
  6. Step 6: Final answer
    x = 1,134,035.35

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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.