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Finding the Fourth Proportional to 668,816.76, 922,993.74 and 367,021.56

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Solution

The fourth proportional to 668,816.76, 922,993.74 and 367,021.56 is: 506,504.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,816.76 : 922,993.74 = 367,021.56 : x
  2. Step 2: Convert to fraction form
    668,816.76/922,993.74 = 367,021.56/x
  3. Step 3: Cross multiply
    668,816.76x = 922,993.74 × 367,021.56
  4. Step 4: Simplify right side
    668,816.76x = 338,758,602,325.03
  5. Step 5: Solve for x
    x = 338,758,602,325.03/668,816.76
  6. Step 6: Final answer
    x = 506,504.36

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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.