Home / 1,330,600.05-1,995,900.08-768,978.45

Finding the Fourth Proportional to 1,330,600.05, 1,995,900.08 and 768,978.45

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Solution

The fourth proportional to 1,330,600.05, 1,995,900.08 and 768,978.45 is: 1,153,467.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,600.05 : 1,995,900.08 = 768,978.45 : x
  2. Step 2: Convert to fraction form
    1,330,600.05/1,995,900.08 = 768,978.45/x
  3. Step 3: Cross multiply
    1,330,600.05x = 1,995,900.08 × 768,978.45
  4. Step 4: Simplify right side
    1,330,600.05x = 1,534,804,146,028.38
  5. Step 5: Solve for x
    x = 1,534,804,146,028.38/1,330,600.05
  6. Step 6: Final answer
    x = 1,153,467.68

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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.