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Finding the Fourth Proportional to 714,846.85, 986,488.63 and 392,562.32

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Solution

The fourth proportional to 714,846.85, 986,488.63 and 392,562.32 is: 541,735.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,846.85 : 986,488.63 = 392,562.32 : x
  2. Step 2: Convert to fraction form
    714,846.85/986,488.63 = 392,562.32/x
  3. Step 3: Cross multiply
    714,846.85x = 986,488.63 × 392,562.32
  4. Step 4: Simplify right side
    714,846.85x = 387,258,265,246.42
  5. Step 5: Solve for x
    x = 387,258,265,246.42/714,846.85
  6. Step 6: Final answer
    x = 541,735.99

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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.