Home / 999,894.72-1,378,419.20-712,916.56

Finding the Fourth Proportional to 999,894.72, 1,378,419.20 and 712,916.56

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Solution

The fourth proportional to 999,894.72, 1,378,419.20 and 712,916.56 is: 982,801.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,894.72 : 1,378,419.20 = 712,916.56 : x
  2. Step 2: Convert to fraction form
    999,894.72/1,378,419.20 = 712,916.56/x
  3. Step 3: Cross multiply
    999,894.72x = 1,378,419.20 × 712,916.56
  4. Step 4: Simplify right side
    999,894.72x = 982,697,874,301.95
  5. Step 5: Solve for x
    x = 982,697,874,301.95/999,894.72
  6. Step 6: Final answer
    x = 982,801.34

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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.