Home / 1,280,072.28-1,766,500.74-699,303.40

Finding the Fourth Proportional to 1,280,072.28, 1,766,500.74 and 699,303.40

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Solution

The fourth proportional to 1,280,072.28, 1,766,500.74 and 699,303.40 is: 965,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,072.28 : 1,766,500.74 = 699,303.40 : x
  2. Step 2: Convert to fraction form
    1,280,072.28/1,766,500.74 = 699,303.40/x
  3. Step 3: Cross multiply
    1,280,072.28x = 1,766,500.74 × 699,303.40
  4. Step 4: Simplify right side
    1,280,072.28x = 1,235,319,973,584.52
  5. Step 5: Solve for x
    x = 1,235,319,973,584.52/1,280,072.28
  6. Step 6: Final answer
    x = 965,039.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.