Home / 1,128,736.85-1,557,213.42-645,042.50

Finding the Fourth Proportional to 1,128,736.85, 1,557,213.42 and 645,042.50

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Solution

The fourth proportional to 1,128,736.85, 1,557,213.42 and 645,042.50 is: 889,905.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,736.85 : 1,557,213.42 = 645,042.50 : x
  2. Step 2: Convert to fraction form
    1,128,736.85/1,557,213.42 = 645,042.50/x
  3. Step 3: Cross multiply
    1,128,736.85x = 1,557,213.42 × 645,042.50
  4. Step 4: Simplify right side
    1,128,736.85x = 1,004,468,837,470.35
  5. Step 5: Solve for x
    x = 1,004,468,837,470.35/1,128,736.85
  6. Step 6: Final answer
    x = 889,905.24

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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.