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Finding the Fourth Proportional to 822,663.20, 1,234,081.20 and 261,567.20

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Solution

The fourth proportional to 822,663.20, 1,234,081.20 and 261,567.20 is: 392,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,663.20 : 1,234,081.20 = 261,567.20 : x
  2. Step 2: Convert to fraction form
    822,663.20/1,234,081.20 = 261,567.20/x
  3. Step 3: Cross multiply
    822,663.20x = 1,234,081.20 × 261,567.20
  4. Step 4: Simplify right side
    822,663.20x = 322,795,164,056.64
  5. Step 5: Solve for x
    x = 322,795,164,056.64/822,663.20
  6. Step 6: Final answer
    x = 392,378.27

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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.