Home / 557,919.81-770,300.10-428,628.02

Finding the Fourth Proportional to 557,919.81, 770,300.10 and 428,628.02

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Solution

The fourth proportional to 557,919.81, 770,300.10 and 428,628.02 is: 591,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,919.81 : 770,300.10 = 428,628.02 : x
  2. Step 2: Convert to fraction form
    557,919.81/770,300.10 = 428,628.02/x
  3. Step 3: Cross multiply
    557,919.81x = 770,300.10 × 428,628.02
  4. Step 4: Simplify right side
    557,919.81x = 330,172,202,817.30
  5. Step 5: Solve for x
    x = 330,172,202,817.30/557,919.81
  6. Step 6: Final answer
    x = 591,791.50

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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.