Home / 913,139.20-1,257,519.36-658,086.40

Finding the Fourth Proportional to 913,139.20, 1,257,519.36 and 658,086.40

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Solution

The fourth proportional to 913,139.20, 1,257,519.36 and 658,086.40 is: 906,276.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,139.20 : 1,257,519.36 = 658,086.40 : x
  2. Step 2: Convert to fraction form
    913,139.20/1,257,519.36 = 658,086.40/x
  3. Step 3: Cross multiply
    913,139.20x = 1,257,519.36 × 658,086.40
  4. Step 4: Simplify right side
    913,139.20x = 827,556,388,552.70
  5. Step 5: Solve for x
    x = 827,556,388,552.70/913,139.20
  6. Step 6: Final answer
    x = 906,276.27

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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.