Home / 711,206.57-981,464.64-388,916.67

Finding the Fourth Proportional to 711,206.57, 981,464.64 and 388,916.67

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Solution

The fourth proportional to 711,206.57, 981,464.64 and 388,916.67 is: 536,704.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,206.57 : 981,464.64 = 388,916.67 : x
  2. Step 2: Convert to fraction form
    711,206.57/981,464.64 = 388,916.67/x
  3. Step 3: Cross multiply
    711,206.57x = 981,464.64 × 388,916.67
  4. Step 4: Simplify right side
    711,206.57x = 381,707,954,372.62
  5. Step 5: Solve for x
    x = 381,707,954,372.62/711,206.57
  6. Step 6: Final answer
    x = 536,704.77

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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.