Home / 1,619,569.75-2,430,849.09-821,411.80

Finding the Fourth Proportional to 1,619,569.75, 2,430,849.09 and 821,411.80

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Solution

The fourth proportional to 1,619,569.75, 2,430,849.09 and 821,411.80 is: 1,232,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,569.75 : 2,430,849.09 = 821,411.80 : x
  2. Step 2: Convert to fraction form
    1,619,569.75/2,430,849.09 = 821,411.80/x
  3. Step 3: Cross multiply
    1,619,569.75x = 2,430,849.09 × 821,411.80
  4. Step 4: Simplify right side
    1,619,569.75x = 1,996,728,126,545.26
  5. Step 5: Solve for x
    x = 1,996,728,126,545.26/1,619,569.75
  6. Step 6: Final answer
    x = 1,232,875.66

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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.