Home / 841,001.40-1,261,702.98-280,040.76

Finding the Fourth Proportional to 841,001.40, 1,261,702.98 and 280,040.76

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Solution

The fourth proportional to 841,001.40, 1,261,702.98 and 280,040.76 is: 420,128.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,001.40 : 1,261,702.98 = 280,040.76 : x
  2. Step 2: Convert to fraction form
    841,001.40/1,261,702.98 = 280,040.76/x
  3. Step 3: Cross multiply
    841,001.40x = 1,261,702.98 × 280,040.76
  4. Step 4: Simplify right side
    841,001.40x = 353,328,261,413.47
  5. Step 5: Solve for x
    x = 353,328,261,413.47/841,001.40
  6. Step 6: Final answer
    x = 420,128.03

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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.