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Finding the Fourth Proportional to 680,462.37, 939,030.68 and 374,532.21

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Solution

The fourth proportional to 680,462.37, 939,030.68 and 374,532.21 is: 516,850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,462.37 : 939,030.68 = 374,532.21 : x
  2. Step 2: Convert to fraction form
    680,462.37/939,030.68 = 374,532.21/x
  3. Step 3: Cross multiply
    680,462.37x = 939,030.68 × 374,532.21
  4. Step 4: Simplify right side
    680,462.37x = 351,697,233,965.54
  5. Step 5: Solve for x
    x = 351,697,233,965.54/680,462.37
  6. Step 6: Final answer
    x = 516,850.38

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Double scale
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Similar ratio
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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.