Home / 859,891.10-1,289,836.65-661,214.30

Finding the Fourth Proportional to 859,891.10, 1,289,836.65 and 661,214.30

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Solution

The fourth proportional to 859,891.10, 1,289,836.65 and 661,214.30 is: 991,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,891.10 : 1,289,836.65 = 661,214.30 : x
  2. Step 2: Convert to fraction form
    859,891.10/1,289,836.65 = 661,214.30/x
  3. Step 3: Cross multiply
    859,891.10x = 1,289,836.65 × 661,214.30
  4. Step 4: Simplify right side
    859,891.10x = 852,858,437,644.10
  5. Step 5: Solve for x
    x = 852,858,437,644.10/859,891.10
  6. Step 6: Final answer
    x = 991,821.45

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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.