Home / 1,115,790.40-1,540,185.60-663,076

Finding the Fourth Proportional to 1,115,790.40, 1,540,185.60 and 663,076

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Solution

The fourth proportional to 1,115,790.40, 1,540,185.60 and 663,076 is: 915,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,790.40 : 1,540,185.60 = 663,076 : x
  2. Step 2: Convert to fraction form
    1,115,790.40/1,540,185.60 = 663,076/x
  3. Step 3: Cross multiply
    1,115,790.40x = 1,540,185.60 × 663,076
  4. Step 4: Simplify right side
    1,115,790.40x = 1,021,260,106,905.60
  5. Step 5: Solve for x
    x = 1,021,260,106,905.60/1,115,790.40
  6. Step 6: Final answer
    x = 915,279.52

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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.