Home / 1,210,043.20-1,815,064.80-1,079,406.40

Finding the Fourth Proportional to 1,210,043.20, 1,815,064.80 and 1,079,406.40

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Solution

The fourth proportional to 1,210,043.20, 1,815,064.80 and 1,079,406.40 is: 1,619,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,043.20 : 1,815,064.80 = 1,079,406.40 : x
  2. Step 2: Convert to fraction form
    1,210,043.20/1,815,064.80 = 1,079,406.40/x
  3. Step 3: Cross multiply
    1,210,043.20x = 1,815,064.80 × 1,079,406.40
  4. Step 4: Simplify right side
    1,210,043.20x = 1,959,192,561,534.72
  5. Step 5: Solve for x
    x = 1,959,192,561,534.72/1,210,043.20
  6. Step 6: Final answer
    x = 1,619,109.60

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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.