Home / 919,825.63-1,269,073.64-521,938.78

Finding the Fourth Proportional to 919,825.63, 1,269,073.64 and 521,938.78

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Solution

The fourth proportional to 919,825.63, 1,269,073.64 and 521,938.78 is: 720,113.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,825.63 : 1,269,073.64 = 521,938.78 : x
  2. Step 2: Convert to fraction form
    919,825.63/1,269,073.64 = 521,938.78/x
  3. Step 3: Cross multiply
    919,825.63x = 1,269,073.64 × 521,938.78
  4. Step 4: Simplify right side
    919,825.63x = 662,378,747,391.76
  5. Step 5: Solve for x
    x = 662,378,747,391.76/919,825.63
  6. Step 6: Final answer
    x = 720,113.38

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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.