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Finding the Fourth Proportional to 680,860.42, 939,590.04 and 408,932.93

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Solution

The fourth proportional to 680,860.42, 939,590.04 and 408,932.93 is: 564,329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,860.42 : 939,590.04 = 408,932.93 : x
  2. Step 2: Convert to fraction form
    680,860.42/939,590.04 = 408,932.93/x
  3. Step 3: Cross multiply
    680,860.42x = 939,590.04 × 408,932.93
  4. Step 4: Simplify right side
    680,860.42x = 384,229,308,056.02
  5. Step 5: Solve for x
    x = 384,229,308,056.02/680,860.42
  6. Step 6: Final answer
    x = 564,329.04

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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.