Home / 851,786.40-1,174,876.20-690,648.24

Finding the Fourth Proportional to 851,786.40, 1,174,876.20 and 690,648.24

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Solution

The fourth proportional to 851,786.40, 1,174,876.20 and 690,648.24 is: 952,616.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,786.40 : 1,174,876.20 = 690,648.24 : x
  2. Step 2: Convert to fraction form
    851,786.40/1,174,876.20 = 690,648.24/x
  3. Step 3: Cross multiply
    851,786.40x = 1,174,876.20 × 690,648.24
  4. Step 4: Simplify right side
    851,786.40x = 811,426,179,747.89
  5. Step 5: Solve for x
    x = 811,426,179,747.89/851,786.40
  6. Step 6: Final answer
    x = 952,616.97

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1.5x scale

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.