Home / 645,038,958.21-890,229,333.24-366,622,332.72

Finding the Fourth Proportional to 645,038,958.21, 890,229,333.24 and 366,622,332.72

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Solution

The fourth proportional to 645,038,958.21, 890,229,333.24 and 366,622,332.72 is: 505,981,771.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,038,958.21 : 890,229,333.24 = 366,622,332.72 : x
  2. Step 2: Convert to fraction form
    645,038,958.21/890,229,333.24 = 366,622,332.72/x
  3. Step 3: Cross multiply
    645,038,958.21x = 890,229,333.24 × 366,622,332.72
  4. Step 4: Simplify right side
    645,038,958.21x = 326,377,954,808,219,072
  5. Step 5: Solve for x
    x = 326,377,954,808,219,072/645,038,958.21
  6. Step 6: Final answer
    x = 505,981,771.57

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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.