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Finding the Fourth Proportional to 393,948.40, 590,922.60 and 370,620.40

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Solution

The fourth proportional to 393,948.40, 590,922.60 and 370,620.40 is: 555,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,948.40 : 590,922.60 = 370,620.40 : x
  2. Step 2: Convert to fraction form
    393,948.40/590,922.60 = 370,620.40/x
  3. Step 3: Cross multiply
    393,948.40x = 590,922.60 × 370,620.40
  4. Step 4: Simplify right side
    393,948.40x = 219,007,970,381.04
  5. Step 5: Solve for x
    x = 219,007,970,381.04/393,948.40
  6. Step 6: Final answer
    x = 555,930.60

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1.5x scale

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.