Home / 419,905,046.10-629,857,569.15-213,280,785.30

Finding the Fourth Proportional to 419,905,046.10, 629,857,569.15 and 213,280,785.30

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Solution

The fourth proportional to 419,905,046.10, 629,857,569.15 and 213,280,785.30 is: 319,921,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,046.10 : 629,857,569.15 = 213,280,785.30 : x
  2. Step 2: Convert to fraction form
    419,905,046.10/629,857,569.15 = 213,280,785.30/x
  3. Step 3: Cross multiply
    419,905,046.10x = 629,857,569.15 × 213,280,785.30
  4. Step 4: Simplify right side
    419,905,046.10x = 134,336,516,975,461,056
  5. Step 5: Solve for x
    x = 134,336,516,975,461,056/419,905,046.10
  6. Step 6: Final answer
    x = 319,921,177.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.