Home / 711,082.11-981,293.40-388,792.43

Finding the Fourth Proportional to 711,082.11, 981,293.40 and 388,792.43

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Solution

The fourth proportional to 711,082.11, 981,293.40 and 388,792.43 is: 536,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,082.11 : 981,293.40 = 388,792.43 : x
  2. Step 2: Convert to fraction form
    711,082.11/981,293.40 = 388,792.43/x
  3. Step 3: Cross multiply
    711,082.11x = 981,293.40 × 388,792.43
  4. Step 4: Simplify right side
    711,082.11x = 381,519,445,528.96
  5. Step 5: Solve for x
    x = 381,519,445,528.96/711,082.11
  6. Step 6: Final answer
    x = 536,533.60

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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.