Home / 1,116,460.16-1,540,173.60-663,430.40

Finding the Fourth Proportional to 1,116,460.16, 1,540,173.60 and 663,430.40

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Solution

The fourth proportional to 1,116,460.16, 1,540,173.60 and 663,430.40 is: 915,212.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116,460.16 : 1,540,173.60 = 663,430.40 : x
  2. Step 2: Convert to fraction form
    1,116,460.16/1,540,173.60 = 663,430.40/x
  3. Step 3: Cross multiply
    1,116,460.16x = 1,540,173.60 × 663,430.40
  4. Step 4: Simplify right side
    1,116,460.16x = 1,021,797,987,517.44
  5. Step 5: Solve for x
    x = 1,021,797,987,517.44/1,116,460.16
  6. Step 6: Final answer
    x = 915,212.23

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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.