Home / 1,383,920.64-2,076,226.56-386,640

Finding the Fourth Proportional to 1,383,920.64, 2,076,226.56 and 386,640

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Solution

The fourth proportional to 1,383,920.64, 2,076,226.56 and 386,640 is: 580,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,920.64 : 2,076,226.56 = 386,640 : x
  2. Step 2: Convert to fraction form
    1,383,920.64/2,076,226.56 = 386,640/x
  3. Step 3: Cross multiply
    1,383,920.64x = 2,076,226.56 × 386,640
  4. Step 4: Simplify right side
    1,383,920.64x = 802,752,237,158.40
  5. Step 5: Solve for x
    x = 802,752,237,158.40/1,383,920.64
  6. Step 6: Final answer
    x = 580,056.55

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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.