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Finding the Fourth Proportional to 658,446.90, 908,609.58 and 386,525.88

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Solution

The fourth proportional to 658,446.90, 908,609.58 and 386,525.88 is: 533,378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,446.90 : 908,609.58 = 386,525.88 : x
  2. Step 2: Convert to fraction form
    658,446.90/908,609.58 = 386,525.88/x
  3. Step 3: Cross multiply
    658,446.90x = 908,609.58 × 386,525.88
  4. Step 4: Simplify right side
    658,446.90x = 351,201,117,485.93
  5. Step 5: Solve for x
    x = 351,201,117,485.93/658,446.90
  6. Step 6: Final answer
    x = 533,378.04

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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.