Home / 1,188,671.76-1,639,968.12-679,013.28

Finding the Fourth Proportional to 1,188,671.76, 1,639,968.12 and 679,013.28

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Solution

The fourth proportional to 1,188,671.76, 1,639,968.12 and 679,013.28 is: 936,810.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,671.76 : 1,639,968.12 = 679,013.28 : x
  2. Step 2: Convert to fraction form
    1,188,671.76/1,639,968.12 = 679,013.28/x
  3. Step 3: Cross multiply
    1,188,671.76x = 1,639,968.12 × 679,013.28
  4. Step 4: Simplify right side
    1,188,671.76x = 1,113,560,132,256.63
  5. Step 5: Solve for x
    x = 1,113,560,132,256.63/1,188,671.76
  6. Step 6: Final answer
    x = 936,810.45

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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.