Home / 1,125,485.75-1,553,025.67-642,022.04

Finding the Fourth Proportional to 1,125,485.75, 1,553,025.67 and 642,022.04

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Solution

The fourth proportional to 1,125,485.75, 1,553,025.67 and 642,022.04 is: 885,907.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,485.75 : 1,553,025.67 = 642,022.04 : x
  2. Step 2: Convert to fraction form
    1,125,485.75/1,553,025.67 = 642,022.04/x
  3. Step 3: Cross multiply
    1,125,485.75x = 1,553,025.67 × 642,022.04
  4. Step 4: Simplify right side
    1,125,485.75x = 997,076,708,825.77
  5. Step 5: Solve for x
    x = 997,076,708,825.77/1,125,485.75
  6. Step 6: Final answer
    x = 885,907.89

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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.