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Finding the Fourth Proportional to 680,779.54, 939,438.84 and 374,796.10

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Solution

The fourth proportional to 680,779.54, 939,438.84 and 374,796.10 is: 517,198.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,779.54 : 939,438.84 = 374,796.10 : x
  2. Step 2: Convert to fraction form
    680,779.54/939,438.84 = 374,796.10/x
  3. Step 3: Cross multiply
    680,779.54x = 939,438.84 × 374,796.10
  4. Step 4: Simplify right side
    680,779.54x = 352,098,013,420.52
  5. Step 5: Solve for x
    x = 352,098,013,420.52/680,779.54
  6. Step 6: Final answer
    x = 517,198.29

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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.