Home / 1,230,920.40-1,845,343.80-639,944.40

Finding the Fourth Proportional to 1,230,920.40, 1,845,343.80 and 639,944.40

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Solution

The fourth proportional to 1,230,920.40, 1,845,343.80 and 639,944.40 is: 959,377.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,920.40 : 1,845,343.80 = 639,944.40 : x
  2. Step 2: Convert to fraction form
    1,230,920.40/1,845,343.80 = 639,944.40/x
  3. Step 3: Cross multiply
    1,230,920.40x = 1,845,343.80 × 639,944.40
  4. Step 4: Simplify right side
    1,230,920.40x = 1,180,917,430,884.72
  5. Step 5: Solve for x
    x = 1,180,917,430,884.72/1,230,920.40
  6. Step 6: Final answer
    x = 959,377.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.