Home / 1,245,973.20-1,868,959.80-820,820.40

Finding the Fourth Proportional to 1,245,973.20, 1,868,959.80 and 820,820.40

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Solution

The fourth proportional to 1,245,973.20, 1,868,959.80 and 820,820.40 is: 1,231,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,973.20 : 1,868,959.80 = 820,820.40 : x
  2. Step 2: Convert to fraction form
    1,245,973.20/1,868,959.80 = 820,820.40/x
  3. Step 3: Cross multiply
    1,245,973.20x = 1,868,959.80 × 820,820.40
  4. Step 4: Simplify right side
    1,245,973.20x = 1,534,080,330,619.92
  5. Step 5: Solve for x
    x = 1,534,080,330,619.92/1,245,973.20
  6. Step 6: Final answer
    x = 1,231,230.60

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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.