Home / 782,289,872.73-1,079,620,070.28-447,867,288.18

Finding the Fourth Proportional to 782,289,872.73, 1,079,620,070.28 and 447,867,288.18

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Solution

The fourth proportional to 782,289,872.73, 1,079,620,070.28 and 447,867,288.18 is: 618,091,234.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,289,872.73 : 1,079,620,070.28 = 447,867,288.18 : x
  2. Step 2: Convert to fraction form
    782,289,872.73/1,079,620,070.28 = 447,867,288.18/x
  3. Step 3: Cross multiply
    782,289,872.73x = 1,079,620,070.28 × 447,867,288.18
  4. Step 4: Simplify right side
    782,289,872.73x = 483,526,513,141,004,608
  5. Step 5: Solve for x
    x = 483,526,513,141,004,608/782,289,872.73
  6. Step 6: Final answer
    x = 618,091,234.46

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1.5x scale

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.