Home / 1,280,098.90-1,920,141.42-521,937.43

Finding the Fourth Proportional to 1,280,098.90, 1,920,141.42 and 521,937.43

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Solution

The fourth proportional to 1,280,098.90, 1,920,141.42 and 521,937.43 is: 782,903.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,098.90 : 1,920,141.42 = 521,937.43 : x
  2. Step 2: Convert to fraction form
    1,280,098.90/1,920,141.42 = 521,937.43/x
  3. Step 3: Cross multiply
    1,280,098.90x = 1,920,141.42 × 521,937.43
  4. Step 4: Simplify right side
    1,280,098.90x = 1,002,193,677,991.35
  5. Step 5: Solve for x
    x = 1,002,193,677,991.35/1,280,098.90
  6. Step 6: Final answer
    x = 782,903.32

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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.