Home / 782,454,951.20-1,172,935,930.80-291,036,634.40

Finding the Fourth Proportional to 782,454,951.20, 1,172,935,930.80 and 291,036,634.40

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Solution

The fourth proportional to 782,454,951.20, 1,172,935,930.80 and 291,036,634.40 is: 436,277,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,454,951.20 : 1,172,935,930.80 = 291,036,634.40 : x
  2. Step 2: Convert to fraction form
    782,454,951.20/1,172,935,930.80 = 291,036,634.40/x
  3. Step 3: Cross multiply
    782,454,951.20x = 1,172,935,930.80 × 291,036,634.40
  4. Step 4: Simplify right side
    782,454,951.20x = 341,367,325,666,863,232
  5. Step 5: Solve for x
    x = 341,367,325,666,863,232/782,454,951.20
  6. Step 6: Final answer
    x = 436,277,290.01

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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.