Home / 1,638,007.20-2,457,010.80-1,239,426.45

Finding the Fourth Proportional to 1,638,007.20, 2,457,010.80 and 1,239,426.45

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Solution

The fourth proportional to 1,638,007.20, 2,457,010.80 and 1,239,426.45 is: 1,859,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,007.20 : 2,457,010.80 = 1,239,426.45 : x
  2. Step 2: Convert to fraction form
    1,638,007.20/2,457,010.80 = 1,239,426.45/x
  3. Step 3: Cross multiply
    1,638,007.20x = 2,457,010.80 × 1,239,426.45
  4. Step 4: Simplify right side
    1,638,007.20x = 3,045,284,173,455.66
  5. Step 5: Solve for x
    x = 3,045,284,173,455.66/1,638,007.20
  6. Step 6: Final answer
    x = 1,859,139.68

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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.