Home / 1,108,638.80-1,662,958.20-842,918.30

Finding the Fourth Proportional to 1,108,638.80, 1,662,958.20 and 842,918.30

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Solution

The fourth proportional to 1,108,638.80, 1,662,958.20 and 842,918.30 is: 1,264,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,638.80 : 1,662,958.20 = 842,918.30 : x
  2. Step 2: Convert to fraction form
    1,108,638.80/1,662,958.20 = 842,918.30/x
  3. Step 3: Cross multiply
    1,108,638.80x = 1,662,958.20 × 842,918.30
  4. Step 4: Simplify right side
    1,108,638.80x = 1,401,737,898,915.06
  5. Step 5: Solve for x
    x = 1,401,737,898,915.06/1,108,638.80
  6. Step 6: Final answer
    x = 1,264,377.45

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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.