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Finding the Fourth Proportional to 680,893.92, 939,616.56 and 374,967.90

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Solution

The fourth proportional to 680,893.92, 939,616.56 and 374,967.90 is: 517,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,893.92 : 939,616.56 = 374,967.90 : x
  2. Step 2: Convert to fraction form
    680,893.92/939,616.56 = 374,967.90/x
  3. Step 3: Cross multiply
    680,893.92x = 939,616.56 × 374,967.90
  4. Step 4: Simplify right side
    680,893.92x = 352,326,048,308.42
  5. Step 5: Solve for x
    x = 352,326,048,308.42/680,893.92
  6. Step 6: Final answer
    x = 517,446.31

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1.5x scale

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.