Home / 868,994.40-1,303,199.28-388,921.44

Finding the Fourth Proportional to 868,994.40, 1,303,199.28 and 388,921.44

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Solution

The fourth proportional to 868,994.40, 1,303,199.28 and 388,921.44 is: 583,251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,994.40 : 1,303,199.28 = 388,921.44 : x
  2. Step 2: Convert to fraction form
    868,994.40/1,303,199.28 = 388,921.44/x
  3. Step 3: Cross multiply
    868,994.40x = 1,303,199.28 × 388,921.44
  4. Step 4: Simplify right side
    868,994.40x = 506,842,140,584.56
  5. Step 5: Solve for x
    x = 506,842,140,584.56/868,994.40
  6. Step 6: Final answer
    x = 583,251.33

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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.