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Finding the Fourth Proportional to 454,638.20, 681,957.30 and 370,657.40

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Solution

The fourth proportional to 454,638.20, 681,957.30 and 370,657.40 is: 555,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,638.20 : 681,957.30 = 370,657.40 : x
  2. Step 2: Convert to fraction form
    454,638.20/681,957.30 = 370,657.40/x
  3. Step 3: Cross multiply
    454,638.20x = 681,957.30 × 370,657.40
  4. Step 4: Simplify right side
    454,638.20x = 252,772,519,729.02
  5. Step 5: Solve for x
    x = 252,772,519,729.02/454,638.20
  6. Step 6: Final answer
    x = 555,986.10

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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.