Home / 1,298,455.20-1,947,682.80-820,158.30

Finding the Fourth Proportional to 1,298,455.20, 1,947,682.80 and 820,158.30

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Solution

The fourth proportional to 1,298,455.20, 1,947,682.80 and 820,158.30 is: 1,230,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,455.20 : 1,947,682.80 = 820,158.30 : x
  2. Step 2: Convert to fraction form
    1,298,455.20/1,947,682.80 = 820,158.30/x
  3. Step 3: Cross multiply
    1,298,455.20x = 1,947,682.80 × 820,158.30
  4. Step 4: Simplify right side
    1,298,455.20x = 1,597,408,214,187.24
  5. Step 5: Solve for x
    x = 1,597,408,214,187.24/1,298,455.20
  6. Step 6: Final answer
    x = 1,230,237.45

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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.