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Finding the Fourth Proportional to 1,281,931.70, 1,921,694.70 and 483,749.60

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Solution

The fourth proportional to 1,281,931.70, 1,921,694.70 and 483,749.60 is: 725,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,931.70 : 1,921,694.70 = 483,749.60 : x
  2. Step 2: Convert to fraction form
    1,281,931.70/1,921,694.70 = 483,749.60/x
  3. Step 3: Cross multiply
    1,281,931.70x = 1,921,694.70 × 483,749.60
  4. Step 4: Simplify right side
    1,281,931.70x = 929,619,042,447.12
  5. Step 5: Solve for x
    x = 929,619,042,447.12/1,281,931.70
  6. Step 6: Final answer
    x = 725,170.49

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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.