Home / 1,125,485.88-1,553,318.44-641,940.18

Finding the Fourth Proportional to 1,125,485.88, 1,553,318.44 and 641,940.18

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Solution

The fourth proportional to 1,125,485.88, 1,553,318.44 and 641,940.18 is: 885,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,485.88 : 1,553,318.44 = 641,940.18 : x
  2. Step 2: Convert to fraction form
    1,125,485.88/1,553,318.44 = 641,940.18/x
  3. Step 3: Cross multiply
    1,125,485.88x = 1,553,318.44 × 641,940.18
  4. Step 4: Simplify right side
    1,125,485.88x = 997,137,518,970.92
  5. Step 5: Solve for x
    x = 997,137,518,970.92/1,125,485.88
  6. Step 6: Final answer
    x = 885,961.82

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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.