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Finding the Fourth Proportional to 674,351.42, 930,669.30 and 368,474.31

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Solution

The fourth proportional to 674,351.42, 930,669.30 and 368,474.31 is: 508,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,351.42 : 930,669.30 = 368,474.31 : x
  2. Step 2: Convert to fraction form
    674,351.42/930,669.30 = 368,474.31/x
  3. Step 3: Cross multiply
    674,351.42x = 930,669.30 × 368,474.31
  4. Step 4: Simplify right side
    674,351.42x = 342,927,728,155.68
  5. Step 5: Solve for x
    x = 342,927,728,155.68/674,351.42
  6. Step 6: Final answer
    x = 508,529.71

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1.5x scale

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.