Home / 1,188,211.64-1,639,732.50-644,347.28

Finding the Fourth Proportional to 1,188,211.64, 1,639,732.50 and 644,347.28

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Solution

The fourth proportional to 1,188,211.64, 1,639,732.50 and 644,347.28 is: 889,199.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,211.64 : 1,639,732.50 = 644,347.28 : x
  2. Step 2: Convert to fraction form
    1,188,211.64/1,639,732.50 = 644,347.28/x
  3. Step 3: Cross multiply
    1,188,211.64x = 1,639,732.50 × 644,347.28
  4. Step 4: Simplify right side
    1,188,211.64x = 1,056,557,176,302.60
  5. Step 5: Solve for x
    x = 1,056,557,176,302.60/1,188,211.64
  6. Step 6: Final answer
    x = 889,199.48

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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.