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Finding the Fourth Proportional to 612,615.69, 845,485.02 and 370,982.30

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Solution

The fourth proportional to 612,615.69, 845,485.02 and 370,982.30 is: 512,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,615.69 : 845,485.02 = 370,982.30 : x
  2. Step 2: Convert to fraction form
    612,615.69/845,485.02 = 370,982.30/x
  3. Step 3: Cross multiply
    612,615.69x = 845,485.02 × 370,982.30
  4. Step 4: Simplify right side
    612,615.69x = 313,659,973,107.72
  5. Step 5: Solve for x
    x = 313,659,973,107.72/612,615.69
  6. Step 6: Final answer
    x = 512,001.21

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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.