Home / 1,399,130.40-2,097,140.40-768,496.80

Finding the Fourth Proportional to 1,399,130.40, 2,097,140.40 and 768,496.80

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Solution

The fourth proportional to 1,399,130.40, 2,097,140.40 and 768,496.80 is: 1,151,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,130.40 : 2,097,140.40 = 768,496.80 : x
  2. Step 2: Convert to fraction form
    1,399,130.40/2,097,140.40 = 768,496.80/x
  3. Step 3: Cross multiply
    1,399,130.40x = 2,097,140.40 × 768,496.80
  4. Step 4: Simplify right side
    1,399,130.40x = 1,611,645,686,550.72
  5. Step 5: Solve for x
    x = 1,611,645,686,550.72/1,399,130.40
  6. Step 6: Final answer
    x = 1,151,890.98

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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.