Home / 787,298.40-1,086,469.20-447,746.40

Finding the Fourth Proportional to 787,298.40, 1,086,469.20 and 447,746.40

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Solution

The fourth proportional to 787,298.40, 1,086,469.20 and 447,746.40 is: 617,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,298.40 : 1,086,469.20 = 447,746.40 : x
  2. Step 2: Convert to fraction form
    787,298.40/1,086,469.20 = 447,746.40/x
  3. Step 3: Cross multiply
    787,298.40x = 1,086,469.20 × 447,746.40
  4. Step 4: Simplify right side
    787,298.40x = 486,462,673,010.88
  5. Step 5: Solve for x
    x = 486,462,673,010.88/787,298.40
  6. Step 6: Final answer
    x = 617,888.56

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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.