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Finding the Fourth Proportional to 680,017.82, 938,436.64 and 374,119.70

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Solution

The fourth proportional to 680,017.82, 938,436.64 and 374,119.70 is: 516,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,017.82 : 938,436.64 = 374,119.70 : x
  2. Step 2: Convert to fraction form
    680,017.82/938,436.64 = 374,119.70/x
  3. Step 3: Cross multiply
    680,017.82x = 938,436.64 × 374,119.70
  4. Step 4: Simplify right side
    680,017.82x = 351,087,628,598.33
  5. Step 5: Solve for x
    x = 351,087,628,598.33/680,017.82
  6. Step 6: Final answer
    x = 516,291.81

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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.