Home / 1,400,175.40-2,098,880.70-689,621.80

Finding the Fourth Proportional to 1,400,175.40, 2,098,880.70 and 689,621.80

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Solution

The fourth proportional to 1,400,175.40, 2,098,880.70 and 689,621.80 is: 1,033,751.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,175.40 : 2,098,880.70 = 689,621.80 : x
  2. Step 2: Convert to fraction form
    1,400,175.40/2,098,880.70 = 689,621.80/x
  3. Step 3: Cross multiply
    1,400,175.40x = 2,098,880.70 × 689,621.80
  4. Step 4: Simplify right side
    1,400,175.40x = 1,447,433,886,319.26
  5. Step 5: Solve for x
    x = 1,447,433,886,319.26/1,400,175.40
  6. Step 6: Final answer
    x = 1,033,751.83

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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.