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Finding the Fourth Proportional to 620,746.90, 931,771.89 and 550,121.38

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Solution

The fourth proportional to 620,746.90, 931,771.89 and 550,121.38 is: 825,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,746.90 : 931,771.89 = 550,121.38 : x
  2. Step 2: Convert to fraction form
    620,746.90/931,771.89 = 550,121.38/x
  3. Step 3: Cross multiply
    620,746.90x = 931,771.89 × 550,121.38
  4. Step 4: Simplify right side
    620,746.90x = 512,587,637,972.01
  5. Step 5: Solve for x
    x = 512,587,637,972.01/620,746.90
  6. Step 6: Final answer
    x = 825,759.48

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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.