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Finding the Fourth Proportional to 873,786.80, 1,311,263.40 and 400,228.40

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Solution

The fourth proportional to 873,786.80, 1,311,263.40 and 400,228.40 is: 600,609.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,786.80 : 1,311,263.40 = 400,228.40 : x
  2. Step 2: Convert to fraction form
    873,786.80/1,311,263.40 = 400,228.40/x
  3. Step 3: Cross multiply
    873,786.80x = 1,311,263.40 × 400,228.40
  4. Step 4: Simplify right side
    873,786.80x = 524,804,852,560.56
  5. Step 5: Solve for x
    x = 524,804,852,560.56/873,786.80
  6. Step 6: Final answer
    x = 600,609.73

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1.5x scale

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.