Home / 1,396,862.40-2,093,911.20-686,308.80

Finding the Fourth Proportional to 1,396,862.40, 2,093,911.20 and 686,308.80

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Solution

The fourth proportional to 1,396,862.40, 2,093,911.20 and 686,308.80 is: 1,028,784.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,862.40 : 2,093,911.20 = 686,308.80 : x
  2. Step 2: Convert to fraction form
    1,396,862.40/2,093,911.20 = 686,308.80/x
  3. Step 3: Cross multiply
    1,396,862.40x = 2,093,911.20 × 686,308.80
  4. Step 4: Simplify right side
    1,396,862.40x = 1,437,069,682,978.56
  5. Step 5: Solve for x
    x = 1,437,069,682,978.56/1,396,862.40
  6. Step 6: Final answer
    x = 1,028,784.00

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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.