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Finding the Fourth Proportional to 680,468.37, 939,038.94 and 374,538.21

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Solution

The fourth proportional to 680,468.37, 939,038.94 and 374,538.21 is: 516,858.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,468.37 : 939,038.94 = 374,538.21 : x
  2. Step 2: Convert to fraction form
    680,468.37/939,038.94 = 374,538.21/x
  3. Step 3: Cross multiply
    680,468.37x = 939,038.94 × 374,538.21
  4. Step 4: Simplify right side
    680,468.37x = 351,705,963,707.90
  5. Step 5: Solve for x
    x = 351,705,963,707.90/680,468.37
  6. Step 6: Final answer
    x = 516,858.65

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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.