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Finding the Fourth Proportional to 1,207,948.02, 1,811,922.41 and 355,019.81

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Solution

The fourth proportional to 1,207,948.02, 1,811,922.41 and 355,019.81 is: 532,529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,948.02 : 1,811,922.41 = 355,019.81 : x
  2. Step 2: Convert to fraction form
    1,207,948.02/1,811,922.41 = 355,019.81/x
  3. Step 3: Cross multiply
    1,207,948.02x = 1,811,922.41 × 355,019.81
  4. Step 4: Simplify right side
    1,207,948.02x = 643,268,350,629.63
  5. Step 5: Solve for x
    x = 643,268,350,629.63/1,207,948.02
  6. Step 6: Final answer
    x = 532,529.83

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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.