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Finding the Fourth Proportional to 680,658.37, 939,272.88 and 374,674.98

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Solution

The fourth proportional to 680,658.37, 939,272.88 and 374,674.98 is: 517,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,658.37 : 939,272.88 = 374,674.98 : x
  2. Step 2: Convert to fraction form
    680,658.37/939,272.88 = 374,674.98/x
  3. Step 3: Cross multiply
    680,658.37x = 939,272.88 × 374,674.98
  4. Step 4: Simplify right side
    680,658.37x = 351,922,047,528.54
  5. Step 5: Solve for x
    x = 351,922,047,528.54/680,658.37
  6. Step 6: Final answer
    x = 517,031.84

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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.