Home / 651,921,342.10-977,882,013.15-393,003,286.90

Finding the Fourth Proportional to 651,921,342.10, 977,882,013.15 and 393,003,286.90

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Solution

The fourth proportional to 651,921,342.10, 977,882,013.15 and 393,003,286.90 is: 589,504,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,921,342.10 : 977,882,013.15 = 393,003,286.90 : x
  2. Step 2: Convert to fraction form
    651,921,342.10/977,882,013.15 = 393,003,286.90/x
  3. Step 3: Cross multiply
    651,921,342.10x = 977,882,013.15 × 393,003,286.90
  4. Step 4: Simplify right side
    651,921,342.10x = 384,310,845,368,339,008
  5. Step 5: Solve for x
    x = 384,310,845,368,339,008/651,921,342.10
  6. Step 6: Final answer
    x = 589,504,930.35

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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.