Home / 620,899.76-856,849.40-375,881.27

Finding the Fourth Proportional to 620,899.76, 856,849.40 and 375,881.27

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Solution

The fourth proportional to 620,899.76, 856,849.40 and 375,881.27 is: 518,720.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,899.76 : 856,849.40 = 375,881.27 : x
  2. Step 2: Convert to fraction form
    620,899.76/856,849.40 = 375,881.27/x
  3. Step 3: Cross multiply
    620,899.76x = 856,849.40 × 375,881.27
  4. Step 4: Simplify right side
    620,899.76x = 322,073,638,791.33
  5. Step 5: Solve for x
    x = 322,073,638,791.33/620,899.76
  6. Step 6: Final answer
    x = 518,720.83

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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.