Home / 1,259,428.05-1,738,006.61-686,468.21

Finding the Fourth Proportional to 1,259,428.05, 1,738,006.61 and 686,468.21

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Solution

The fourth proportional to 1,259,428.05, 1,738,006.61 and 686,468.21 is: 947,323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,428.05 : 1,738,006.61 = 686,468.21 : x
  2. Step 2: Convert to fraction form
    1,259,428.05/1,738,006.61 = 686,468.21/x
  3. Step 3: Cross multiply
    1,259,428.05x = 1,738,006.61 × 686,468.21
  4. Step 4: Simplify right side
    1,259,428.05x = 1,193,086,274,412.49
  5. Step 5: Solve for x
    x = 1,193,086,274,412.49/1,259,428.05
  6. Step 6: Final answer
    x = 947,323.89

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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.