Home / 693,151.40-1,039,826.28-213,419.79

Finding the Fourth Proportional to 693,151.40, 1,039,826.28 and 213,419.79

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Solution

The fourth proportional to 693,151.40, 1,039,826.28 and 213,419.79 is: 320,160.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,151.40 : 1,039,826.28 = 213,419.79 : x
  2. Step 2: Convert to fraction form
    693,151.40/1,039,826.28 = 213,419.79/x
  3. Step 3: Cross multiply
    693,151.40x = 1,039,826.28 × 213,419.79
  4. Step 4: Simplify right side
    693,151.40x = 221,919,505,913.92
  5. Step 5: Solve for x
    x = 221,919,505,913.92/693,151.40
  6. Step 6: Final answer
    x = 320,160.22

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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.