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Finding the Fourth Proportional to 618,177.60, 927,880.80 and 302,990.40

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Solution

The fourth proportional to 618,177.60, 927,880.80 and 302,990.40 is: 454,786.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,177.60 : 927,880.80 = 302,990.40 : x
  2. Step 2: Convert to fraction form
    618,177.60/927,880.80 = 302,990.40/x
  3. Step 3: Cross multiply
    618,177.60x = 927,880.80 × 302,990.40
  4. Step 4: Simplify right side
    618,177.60x = 281,138,974,744.32
  5. Step 5: Solve for x
    x = 281,138,974,744.32/618,177.60
  6. Step 6: Final answer
    x = 454,786.74

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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.