Home / 842,483.40-1,263,725.10-421,704.60

Finding the Fourth Proportional to 842,483.40, 1,263,725.10 and 421,704.60

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Solution

The fourth proportional to 842,483.40, 1,263,725.10 and 421,704.60 is: 632,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,483.40 : 1,263,725.10 = 421,704.60 : x
  2. Step 2: Convert to fraction form
    842,483.40/1,263,725.10 = 421,704.60/x
  3. Step 3: Cross multiply
    842,483.40x = 1,263,725.10 × 421,704.60
  4. Step 4: Simplify right side
    842,483.40x = 532,918,687,805.46
  5. Step 5: Solve for x
    x = 532,918,687,805.46/842,483.40
  6. Step 6: Final answer
    x = 632,556.90

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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.