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Finding the Fourth Proportional to 645,349.20, 967,894.20 and 308,389.20

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Solution

The fourth proportional to 645,349.20, 967,894.20 and 308,389.20 is: 462,521.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,349.20 : 967,894.20 = 308,389.20 : x
  2. Step 2: Convert to fraction form
    645,349.20/967,894.20 = 308,389.20/x
  3. Step 3: Cross multiply
    645,349.20x = 967,894.20 × 308,389.20
  4. Step 4: Simplify right side
    645,349.20x = 298,488,118,022.64
  5. Step 5: Solve for x
    x = 298,488,118,022.64/645,349.20
  6. Step 6: Final answer
    x = 462,521.87

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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.