Home / 711,207.57-981,466.02-388,917.67

Finding the Fourth Proportional to 711,207.57, 981,466.02 and 388,917.67

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Solution

The fourth proportional to 711,207.57, 981,466.02 and 388,917.67 is: 536,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,207.57 : 981,466.02 = 388,917.67 : x
  2. Step 2: Convert to fraction form
    711,207.57/981,466.02 = 388,917.67/x
  3. Step 3: Cross multiply
    711,207.57x = 981,466.02 × 388,917.67
  4. Step 4: Simplify right side
    711,207.57x = 381,709,477,682.57
  5. Step 5: Solve for x
    x = 381,709,477,682.57/711,207.57
  6. Step 6: Final answer
    x = 536,706.15

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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.