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Finding the Fourth Proportional to 447,078.20, 668,867.70 and 289,614.20

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Solution

The fourth proportional to 447,078.20, 668,867.70 and 289,614.20 is: 433,287.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,078.20 : 668,867.70 = 289,614.20 : x
  2. Step 2: Convert to fraction form
    447,078.20/668,867.70 = 289,614.20/x
  3. Step 3: Cross multiply
    447,078.20x = 668,867.70 × 289,614.20
  4. Step 4: Simplify right side
    447,078.20x = 193,713,583,841.34
  5. Step 5: Solve for x
    x = 193,713,583,841.34/447,078.20
  6. Step 6: Final answer
    x = 433,287.92

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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.