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Finding the Fourth Proportional to 480,806.30, 663,304.20 and 289,711.10

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Solution

The fourth proportional to 480,806.30, 663,304.20 and 289,711.10 is: 399,675.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,806.30 : 663,304.20 = 289,711.10 : x
  2. Step 2: Convert to fraction form
    480,806.30/663,304.20 = 289,711.10/x
  3. Step 3: Cross multiply
    480,806.30x = 663,304.20 × 289,711.10
  4. Step 4: Simplify right side
    480,806.30x = 192,166,589,416.62
  5. Step 5: Solve for x
    x = 192,166,589,416.62/480,806.30
  6. Step 6: Final answer
    x = 399,675.69

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1.5x scale

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.