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Finding the Fourth Proportional to 692,083.66, 954,912.45 and 420,144.70

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Solution

The fourth proportional to 692,083.66, 954,912.45 and 420,144.70 is: 579,700.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,083.66 : 954,912.45 = 420,144.70 : x
  2. Step 2: Convert to fraction form
    692,083.66/954,912.45 = 420,144.70/x
  3. Step 3: Cross multiply
    692,083.66x = 954,912.45 × 420,144.70
  4. Step 4: Simplify right side
    692,083.66x = 401,201,404,831.52
  5. Step 5: Solve for x
    x = 401,201,404,831.52/692,083.66
  6. Step 6: Final answer
    x = 579,700.73

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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.