Home / 625,619.80-938,429.70-388,840.60

Finding the Fourth Proportional to 625,619.80, 938,429.70 and 388,840.60

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Solution

The fourth proportional to 625,619.80, 938,429.70 and 388,840.60 is: 583,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,619.80 : 938,429.70 = 388,840.60 : x
  2. Step 2: Convert to fraction form
    625,619.80/938,429.70 = 388,840.60/x
  3. Step 3: Cross multiply
    625,619.80x = 938,429.70 × 388,840.60
  4. Step 4: Simplify right side
    625,619.80x = 364,899,567,605.82
  5. Step 5: Solve for x
    x = 364,899,567,605.82/625,619.80
  6. Step 6: Final answer
    x = 583,260.90

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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.