Home / 1,115,786.40-1,540,180.08-663,072

Finding the Fourth Proportional to 1,115,786.40, 1,540,180.08 and 663,072

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Solution

The fourth proportional to 1,115,786.40, 1,540,180.08 and 663,072 is: 915,274.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,786.40 : 1,540,180.08 = 663,072 : x
  2. Step 2: Convert to fraction form
    1,115,786.40/1,540,180.08 = 663,072/x
  3. Step 3: Cross multiply
    1,115,786.40x = 1,540,180.08 × 663,072
  4. Step 4: Simplify right side
    1,115,786.40x = 1,021,250,286,005.76
  5. Step 5: Solve for x
    x = 1,021,250,286,005.76/1,115,786.40
  6. Step 6: Final answer
    x = 915,274.00

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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.