Home / 1,208,516.20-1,812,716.70-409,719.40

Finding the Fourth Proportional to 1,208,516.20, 1,812,716.70 and 409,719.40

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Solution

The fourth proportional to 1,208,516.20, 1,812,716.70 and 409,719.40 is: 614,559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,516.20 : 1,812,716.70 = 409,719.40 : x
  2. Step 2: Convert to fraction form
    1,208,516.20/1,812,716.70 = 409,719.40/x
  3. Step 3: Cross multiply
    1,208,516.20x = 1,812,716.70 × 409,719.40
  4. Step 4: Simplify right side
    1,208,516.20x = 742,705,198,693.98
  5. Step 5: Solve for x
    x = 742,705,198,693.98/1,208,516.20
  6. Step 6: Final answer
    x = 614,559.57

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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.