Home / 714,911.22-986,577.30-392,621.40

Finding the Fourth Proportional to 714,911.22, 986,577.30 and 392,621.40

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Solution

The fourth proportional to 714,911.22, 986,577.30 and 392,621.40 is: 541,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,911.22 : 986,577.30 = 392,621.40 : x
  2. Step 2: Convert to fraction form
    714,911.22/986,577.30 = 392,621.40/x
  3. Step 3: Cross multiply
    714,911.22x = 986,577.30 × 392,621.40
  4. Step 4: Simplify right side
    714,911.22x = 387,351,360,734.22
  5. Step 5: Solve for x
    x = 387,351,360,734.22/714,911.22
  6. Step 6: Final answer
    x = 541,817.43

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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.