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Finding the Fourth Proportional to 680,369.51, 938,874.89 and 374,474.93

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Solution

The fourth proportional to 680,369.51, 938,874.89 and 374,474.93 is: 516,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,369.51 : 938,874.89 = 374,474.93 : x
  2. Step 2: Convert to fraction form
    680,369.51/938,874.89 = 374,474.93/x
  3. Step 3: Cross multiply
    680,369.51x = 938,874.89 × 374,474.93
  4. Step 4: Simplify right side
    680,369.51x = 351,585,102,144.76
  5. Step 5: Solve for x
    x = 351,585,102,144.76/680,369.51
  6. Step 6: Final answer
    x = 516,756.11

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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.