Home / 1,315,340.40-1,973,010.60-677,611.20

Finding the Fourth Proportional to 1,315,340.40, 1,973,010.60 and 677,611.20

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Solution

The fourth proportional to 1,315,340.40, 1,973,010.60 and 677,611.20 is: 1,016,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,340.40 : 1,973,010.60 = 677,611.20 : x
  2. Step 2: Convert to fraction form
    1,315,340.40/1,973,010.60 = 677,611.20/x
  3. Step 3: Cross multiply
    1,315,340.40x = 1,973,010.60 × 677,611.20
  4. Step 4: Simplify right side
    1,315,340.40x = 1,336,934,080,278.72
  5. Step 5: Solve for x
    x = 1,336,934,080,278.72/1,315,340.40
  6. Step 6: Final answer
    x = 1,016,416.80

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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.