Home / 816,638.20-1,225,120.81-457,320.04

Finding the Fourth Proportional to 816,638.20, 1,225,120.81 and 457,320.04

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Solution

The fourth proportional to 816,638.20, 1,225,120.81 and 457,320.04 is: 686,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,638.20 : 1,225,120.81 = 457,320.04 : x
  2. Step 2: Convert to fraction form
    816,638.20/1,225,120.81 = 457,320.04/x
  3. Step 3: Cross multiply
    816,638.20x = 1,225,120.81 × 457,320.04
  4. Step 4: Simplify right side
    816,638.20x = 560,272,295,914.53
  5. Step 5: Solve for x
    x = 560,272,295,914.53/816,638.20
  6. Step 6: Final answer
    x = 686,071.62

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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.