Home / 843,007.80-1,263,920.40-310,459.80

Finding the Fourth Proportional to 843,007.80, 1,263,920.40 and 310,459.80

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Solution

The fourth proportional to 843,007.80, 1,263,920.40 and 310,459.80 is: 465,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,007.80 : 1,263,920.40 = 310,459.80 : x
  2. Step 2: Convert to fraction form
    843,007.80/1,263,920.40 = 310,459.80/x
  3. Step 3: Cross multiply
    843,007.80x = 1,263,920.40 × 310,459.80
  4. Step 4: Simplify right side
    843,007.80x = 392,396,474,599.92
  5. Step 5: Solve for x
    x = 392,396,474,599.92/843,007.80
  6. Step 6: Final answer
    x = 465,471.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.