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Finding the Fourth Proportional to 620,502.43, 856,329.93 and 467,270.28

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Solution

The fourth proportional to 620,502.43, 856,329.93 and 467,270.28 is: 644,860.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,502.43 : 856,329.93 = 467,270.28 : x
  2. Step 2: Convert to fraction form
    620,502.43/856,329.93 = 467,270.28/x
  3. Step 3: Cross multiply
    620,502.43x = 856,329.93 × 467,270.28
  4. Step 4: Simplify right side
    620,502.43x = 400,137,523,025.57
  5. Step 5: Solve for x
    x = 400,137,523,025.57/620,502.43
  6. Step 6: Final answer
    x = 644,860.53

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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.