Home / 1,215,629.40-1,820,819.70-790,476.60

Finding the Fourth Proportional to 1,215,629.40, 1,820,819.70 and 790,476.60

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Solution

The fourth proportional to 1,215,629.40, 1,820,819.70 and 790,476.60 is: 1,184,008.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,629.40 : 1,820,819.70 = 790,476.60 : x
  2. Step 2: Convert to fraction form
    1,215,629.40/1,820,819.70 = 790,476.60/x
  3. Step 3: Cross multiply
    1,215,629.40x = 1,820,819.70 × 790,476.60
  4. Step 4: Simplify right side
    1,215,629.40x = 1,439,315,365,669.02
  5. Step 5: Solve for x
    x = 1,439,315,365,669.02/1,215,629.40
  6. Step 6: Final answer
    x = 1,184,008.35

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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.