Home / 658,078.40-986,512.80-657,675.20

Finding the Fourth Proportional to 658,078.40, 986,512.80 and 657,675.20

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Solution

The fourth proportional to 658,078.40, 986,512.80 and 657,675.20 is: 985,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,078.40 : 986,512.80 = 657,675.20 : x
  2. Step 2: Convert to fraction form
    658,078.40/986,512.80 = 657,675.20/x
  3. Step 3: Cross multiply
    658,078.40x = 986,512.80 × 657,675.20
  4. Step 4: Simplify right side
    658,078.40x = 648,805,003,042.56
  5. Step 5: Solve for x
    x = 648,805,003,042.56/658,078.40
  6. Step 6: Final answer
    x = 985,908.37

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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.