Home / 857,654.60-1,287,864.30-647,529.80

Finding the Fourth Proportional to 857,654.60, 1,287,864.30 and 647,529.80

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Solution

The fourth proportional to 857,654.60, 1,287,864.30 and 647,529.80 is: 972,338.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,654.60 : 1,287,864.30 = 647,529.80 : x
  2. Step 2: Convert to fraction form
    857,654.60/1,287,864.30 = 647,529.80/x
  3. Step 3: Cross multiply
    857,654.60x = 1,287,864.30 × 647,529.80
  4. Step 4: Simplify right side
    857,654.60x = 833,930,512,606.14
  5. Step 5: Solve for x
    x = 833,930,512,606.14/857,654.60
  6. Step 6: Final answer
    x = 972,338.41

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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.