Home / 818,607.47-1,228,107.83-313,160.18

Finding the Fourth Proportional to 818,607.47, 1,228,107.83 and 313,160.18

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Solution

The fourth proportional to 818,607.47, 1,228,107.83 and 313,160.18 is: 469,815.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,607.47 : 1,228,107.83 = 313,160.18 : x
  2. Step 2: Convert to fraction form
    818,607.47/1,228,107.83 = 313,160.18/x
  3. Step 3: Cross multiply
    818,607.47x = 1,228,107.83 × 313,160.18
  4. Step 4: Simplify right side
    818,607.47x = 384,594,461,395.87
  5. Step 5: Solve for x
    x = 384,594,461,395.87/818,607.47
  6. Step 6: Final answer
    x = 469,815.48

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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.