Home / 1,263,364.40-1,895,145.96-421,919.12

Finding the Fourth Proportional to 1,263,364.40, 1,895,145.96 and 421,919.12

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Solution

The fourth proportional to 1,263,364.40, 1,895,145.96 and 421,919.12 is: 632,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,364.40 : 1,895,145.96 = 421,919.12 : x
  2. Step 2: Convert to fraction form
    1,263,364.40/1,895,145.96 = 421,919.12/x
  3. Step 3: Cross multiply
    1,263,364.40x = 1,895,145.96 × 421,919.12
  4. Step 4: Simplify right side
    1,263,364.40x = 799,598,315,714.76
  5. Step 5: Solve for x
    x = 799,598,315,714.76/1,263,364.40
  6. Step 6: Final answer
    x = 632,911.86

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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.