Home / 711,206.19-981,464.12-388,916.29

Finding the Fourth Proportional to 711,206.19, 981,464.12 and 388,916.29

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Solution

The fourth proportional to 711,206.19, 981,464.12 and 388,916.29 is: 536,704.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,206.19 : 981,464.12 = 388,916.29 : x
  2. Step 2: Convert to fraction form
    711,206.19/981,464.12 = 388,916.29/x
  3. Step 3: Cross multiply
    711,206.19x = 981,464.12 × 388,916.29
  4. Step 4: Simplify right side
    711,206.19x = 381,707,385,059.20
  5. Step 5: Solve for x
    x = 381,707,385,059.20/711,206.19
  6. Step 6: Final answer
    x = 536,704.25

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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.