Home / 399,206.20-598,809.30-393,957.40

Finding the Fourth Proportional to 399,206.20, 598,809.30 and 393,957.40

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Solution

The fourth proportional to 399,206.20, 598,809.30 and 393,957.40 is: 590,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,206.20 : 598,809.30 = 393,957.40 : x
  2. Step 2: Convert to fraction form
    399,206.20/598,809.30 = 393,957.40/x
  3. Step 3: Cross multiply
    399,206.20x = 598,809.30 × 393,957.40
  4. Step 4: Simplify right side
    399,206.20x = 235,905,354,923.82
  5. Step 5: Solve for x
    x = 235,905,354,923.82/399,206.20
  6. Step 6: Final answer
    x = 590,936.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.