Home / 1,209,428.23-1,668,635.22-686,052.58

Finding the Fourth Proportional to 1,209,428.23, 1,668,635.22 and 686,052.58

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Solution

The fourth proportional to 1,209,428.23, 1,668,635.22 and 686,052.58 is: 946,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,428.23 : 1,668,635.22 = 686,052.58 : x
  2. Step 2: Convert to fraction form
    1,209,428.23/1,668,635.22 = 686,052.58/x
  3. Step 3: Cross multiply
    1,209,428.23x = 1,668,635.22 × 686,052.58
  4. Step 4: Simplify right side
    1,209,428.23x = 1,144,771,497,759.87
  5. Step 5: Solve for x
    x = 1,144,771,497,759.87/1,209,428.23
  6. Step 6: Final answer
    x = 946,539.42

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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.