Home / 1,292,638.28-1,783,911.66-719,665.88

Finding the Fourth Proportional to 1,292,638.28, 1,783,911.66 and 719,665.88

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Solution

The fourth proportional to 1,292,638.28, 1,783,911.66 and 719,665.88 is: 993,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,638.28 : 1,783,911.66 = 719,665.88 : x
  2. Step 2: Convert to fraction form
    1,292,638.28/1,783,911.66 = 719,665.88/x
  3. Step 3: Cross multiply
    1,292,638.28x = 1,783,911.66 × 719,665.88
  4. Step 4: Simplify right side
    1,292,638.28x = 1,283,820,354,636.16
  5. Step 5: Solve for x
    x = 1,283,820,354,636.16/1,292,638.28
  6. Step 6: Final answer
    x = 993,178.35

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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.