Home / 805,940,951.40-1,206,895,887.90-644,697,815.40

Finding the Fourth Proportional to 805,940,951.40, 1,206,895,887.90 and 644,697,815.40

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Solution

The fourth proportional to 805,940,951.40, 1,206,895,887.90 and 644,697,815.40 is: 965,434,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,940,951.40 : 1,206,895,887.90 = 644,697,815.40 : x
  2. Step 2: Convert to fraction form
    805,940,951.40/1,206,895,887.90 = 644,697,815.40/x
  3. Step 3: Cross multiply
    805,940,951.40x = 1,206,895,887.90 × 644,697,815.40
  4. Step 4: Simplify right side
    805,940,951.40x = 778,083,142,344,373,376
  5. Step 5: Solve for x
    x = 778,083,142,344,373,376/805,940,951.40
  6. Step 6: Final answer
    x = 965,434,429.15

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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.