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Finding the Fourth Proportional to 680,029.40, 938,403.50 and 374,056.40

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Solution

The fourth proportional to 680,029.40, 938,403.50 and 374,056.40 is: 516,177.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,029.40 : 938,403.50 = 374,056.40 : x
  2. Step 2: Convert to fraction form
    680,029.40/938,403.50 = 374,056.40/x
  3. Step 3: Cross multiply
    680,029.40x = 938,403.50 × 374,056.40
  4. Step 4: Simplify right side
    680,029.40x = 351,015,835,433.13
  5. Step 5: Solve for x
    x = 351,015,835,433.13/680,029.40
  6. Step 6: Final answer
    x = 516,177.44

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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.