Home / 808,429.20-1,212,643.80-275,870.40

Finding the Fourth Proportional to 808,429.20, 1,212,643.80 and 275,870.40

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Solution

The fourth proportional to 808,429.20, 1,212,643.80 and 275,870.40 is: 413,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,429.20 : 1,212,643.80 = 275,870.40 : x
  2. Step 2: Convert to fraction form
    808,429.20/1,212,643.80 = 275,870.40/x
  3. Step 3: Cross multiply
    808,429.20x = 1,212,643.80 × 275,870.40
  4. Step 4: Simplify right side
    808,429.20x = 334,532,530,163.52
  5. Step 5: Solve for x
    x = 334,532,530,163.52/808,429.20
  6. Step 6: Final answer
    x = 413,805.60

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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.