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Finding the Fourth Proportional to 548,521.65, 822,242.62 and 320,527.91

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Solution

The fourth proportional to 548,521.65, 822,242.62 and 320,527.91 is: 480,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,521.65 : 822,242.62 = 320,527.91 : x
  2. Step 2: Convert to fraction form
    548,521.65/822,242.62 = 320,527.91/x
  3. Step 3: Cross multiply
    548,521.65x = 822,242.62 × 320,527.91
  4. Step 4: Simplify right side
    548,521.65x = 263,551,706,898.89
  5. Step 5: Solve for x
    x = 263,551,706,898.89/548,521.65
  6. Step 6: Final answer
    x = 480,476.40

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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.