Home / 1,286,886.64-1,930,344.82-388,336.16

Finding the Fourth Proportional to 1,286,886.64, 1,930,344.82 and 388,336.16

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Solution

The fourth proportional to 1,286,886.64, 1,930,344.82 and 388,336.16 is: 582,508.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,886.64 : 1,930,344.82 = 388,336.16 : x
  2. Step 2: Convert to fraction form
    1,286,886.64/1,930,344.82 = 388,336.16/x
  3. Step 3: Cross multiply
    1,286,886.64x = 1,930,344.82 × 388,336.16
  4. Step 4: Simplify right side
    1,286,886.64x = 749,622,683,281.29
  5. Step 5: Solve for x
    x = 749,622,683,281.29/1,286,886.64
  6. Step 6: Final answer
    x = 582,508.72

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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.