Home / 426,223.23-639,440.09-126,702.54

Finding the Fourth Proportional to 426,223.23, 639,440.09 and 126,702.54

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Solution

The fourth proportional to 426,223.23, 639,440.09 and 126,702.54 is: 190,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,223.23 : 639,440.09 = 126,702.54 : x
  2. Step 2: Convert to fraction form
    426,223.23/639,440.09 = 126,702.54/x
  3. Step 3: Cross multiply
    426,223.23x = 639,440.09 × 126,702.54
  4. Step 4: Simplify right side
    426,223.23x = 81,018,683,422.45
  5. Step 5: Solve for x
    x = 81,018,683,422.45/426,223.23
  6. Step 6: Final answer
    x = 190,085.10

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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.