Home / 842,489.40-1,263,734.10-421,710.60

Finding the Fourth Proportional to 842,489.40, 1,263,734.10 and 421,710.60

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Solution

The fourth proportional to 842,489.40, 1,263,734.10 and 421,710.60 is: 632,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,489.40 : 1,263,734.10 = 421,710.60 : x
  2. Step 2: Convert to fraction form
    842,489.40/1,263,734.10 = 421,710.60/x
  3. Step 3: Cross multiply
    842,489.40x = 1,263,734.10 × 421,710.60
  4. Step 4: Simplify right side
    842,489.40x = 532,930,065,551.46
  5. Step 5: Solve for x
    x = 532,930,065,551.46/842,489.40
  6. Step 6: Final answer
    x = 632,565.90

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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.