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Finding the Fourth Proportional to 620,309.02, 930,452.72 and 339,673.18

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Solution

The fourth proportional to 620,309.02, 930,452.72 and 339,673.18 is: 509,503.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,309.02 : 930,452.72 = 339,673.18 : x
  2. Step 2: Convert to fraction form
    620,309.02/930,452.72 = 339,673.18/x
  3. Step 3: Cross multiply
    620,309.02x = 930,452.72 × 339,673.18
  4. Step 4: Simplify right side
    620,309.02x = 316,049,834,242.05
  5. Step 5: Solve for x
    x = 316,049,834,242.05/620,309.02
  6. Step 6: Final answer
    x = 509,503.85

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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.