Home / 665,981,619.40-998,972,429.10-655,777,952.20

Finding the Fourth Proportional to 665,981,619.40, 998,972,429.10 and 655,777,952.20

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Solution

The fourth proportional to 665,981,619.40, 998,972,429.10 and 655,777,952.20 is: 983,666,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,981,619.40 : 998,972,429.10 = 655,777,952.20 : x
  2. Step 2: Convert to fraction form
    665,981,619.40/998,972,429.10 = 655,777,952.20/x
  3. Step 3: Cross multiply
    665,981,619.40x = 998,972,429.10 × 655,777,952.20
  4. Step 4: Simplify right side
    665,981,619.40x = 655,104,093,859,457,792
  5. Step 5: Solve for x
    x = 655,104,093,859,457,792/665,981,619.40
  6. Step 6: Final answer
    x = 983,666,928.30

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1.5x scale

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.