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Finding the Fourth Proportional to 680,858.42, 939,587.28 and 408,930.93

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Solution

The fourth proportional to 680,858.42, 939,587.28 and 408,930.93 is: 564,326.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,858.42 : 939,587.28 = 408,930.93 : x
  2. Step 2: Convert to fraction form
    680,858.42/939,587.28 = 408,930.93/x
  3. Step 3: Cross multiply
    680,858.42x = 939,587.28 × 408,930.93
  4. Step 4: Simplify right side
    680,858.42x = 384,226,300,226.57
  5. Step 5: Solve for x
    x = 384,226,300,226.57/680,858.42
  6. Step 6: Final answer
    x = 564,326.29

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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.