Home / 1,383,521.16-1,909,235.70-779,907.72

Finding the Fourth Proportional to 1,383,521.16, 1,909,235.70 and 779,907.72

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Solution

The fourth proportional to 1,383,521.16, 1,909,235.70 and 779,907.72 is: 1,076,259.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,521.16 : 1,909,235.70 = 779,907.72 : x
  2. Step 2: Convert to fraction form
    1,383,521.16/1,909,235.70 = 779,907.72/x
  3. Step 3: Cross multiply
    1,383,521.16x = 1,909,235.70 × 779,907.72
  4. Step 4: Simplify right side
    1,383,521.16x = 1,489,027,661,729.60
  5. Step 5: Solve for x
    x = 1,489,027,661,729.60/1,383,521.16
  6. Step 6: Final answer
    x = 1,076,259.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.