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Finding the Fourth Proportional to 694,191,716.88, 957,981,941.28 and 380,931,173.12

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Solution

The fourth proportional to 694,191,716.88, 957,981,941.28 and 380,931,173.12 is: 525,683,576.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,191,716.88 : 957,981,941.28 = 380,931,173.12 : x
  2. Step 2: Convert to fraction form
    694,191,716.88/957,981,941.28 = 380,931,173.12/x
  3. Step 3: Cross multiply
    694,191,716.88x = 957,981,941.28 × 380,931,173.12
  4. Step 4: Simplify right side
    694,191,716.88x = 364,925,184,719,565,376
  5. Step 5: Solve for x
    x = 364,925,184,719,565,376/694,191,716.88
  6. Step 6: Final answer
    x = 525,683,576.81

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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.