Home / 1,320,446.64-1,980,812.52-421,573.44

Finding the Fourth Proportional to 1,320,446.64, 1,980,812.52 and 421,573.44

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Solution

The fourth proportional to 1,320,446.64, 1,980,812.52 and 421,573.44 is: 632,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,446.64 : 1,980,812.52 = 421,573.44 : x
  2. Step 2: Convert to fraction form
    1,320,446.64/1,980,812.52 = 421,573.44/x
  3. Step 3: Cross multiply
    1,320,446.64x = 1,980,812.52 × 421,573.44
  4. Step 4: Simplify right side
    1,320,446.64x = 835,057,948,051.47
  5. Step 5: Solve for x
    x = 835,057,948,051.47/1,320,446.64
  6. Step 6: Final answer
    x = 632,405.67

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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.