Home / 984,861.81-1,359,367.38-641,639.70

Finding the Fourth Proportional to 984,861.81, 1,359,367.38 and 641,639.70

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Solution

The fourth proportional to 984,861.81, 1,359,367.38 and 641,639.70 is: 885,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,861.81 : 1,359,367.38 = 641,639.70 : x
  2. Step 2: Convert to fraction form
    984,861.81/1,359,367.38 = 641,639.70/x
  3. Step 3: Cross multiply
    984,861.81x = 1,359,367.38 × 641,639.70
  4. Step 4: Simplify right side
    984,861.81x = 872,224,077,892.99
  5. Step 5: Solve for x
    x = 872,224,077,892.99/984,861.81
  6. Step 6: Final answer
    x = 885,630.93

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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.