Home / 1,385,393.60-2,078,076.02-438,764.22

Finding the Fourth Proportional to 1,385,393.60, 2,078,076.02 and 438,764.22

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Solution

The fourth proportional to 1,385,393.60, 2,078,076.02 and 438,764.22 is: 658,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,393.60 : 2,078,076.02 = 438,764.22 : x
  2. Step 2: Convert to fraction form
    1,385,393.60/2,078,076.02 = 438,764.22/x
  3. Step 3: Cross multiply
    1,385,393.60x = 2,078,076.02 × 438,764.22
  4. Step 4: Simplify right side
    1,385,393.60x = 911,785,404,016.00
  5. Step 5: Solve for x
    x = 911,785,404,016.00/1,385,393.60
  6. Step 6: Final answer
    x = 658,141.78

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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.