Home / 1,428,108.99-1,970,790.36-816,274.89

Finding the Fourth Proportional to 1,428,108.99, 1,970,790.36 and 816,274.89

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Solution

The fourth proportional to 1,428,108.99, 1,970,790.36 and 816,274.89 is: 1,126,459.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,108.99 : 1,970,790.36 = 816,274.89 : x
  2. Step 2: Convert to fraction form
    1,428,108.99/1,970,790.36 = 816,274.89/x
  3. Step 3: Cross multiply
    1,428,108.99x = 1,970,790.36 × 816,274.89
  4. Step 4: Simplify right side
    1,428,108.99x = 1,608,706,684,322.06
  5. Step 5: Solve for x
    x = 1,608,706,684,322.06/1,428,108.99
  6. Step 6: Final answer
    x = 1,126,459.32

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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.