Home / 643,726.20-965,762.10-574,087.80

Finding the Fourth Proportional to 643,726.20, 965,762.10 and 574,087.80

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Solution

The fourth proportional to 643,726.20, 965,762.10 and 574,087.80 is: 861,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,726.20 : 965,762.10 = 574,087.80 : x
  2. Step 2: Convert to fraction form
    643,726.20/965,762.10 = 574,087.80/x
  3. Step 3: Cross multiply
    643,726.20x = 965,762.10 × 574,087.80
  4. Step 4: Simplify right side
    643,726.20x = 554,432,239,312.38
  5. Step 5: Solve for x
    x = 554,432,239,312.38/643,726.20
  6. Step 6: Final answer
    x = 861,285.81

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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.