Home / 1,210,231,961.80-1,815,096,000.30-520,161,728.20

Finding the Fourth Proportional to 1,210,231,961.80, 1,815,096,000.30 and 520,161,728.20

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Solution

The fourth proportional to 1,210,231,961.80, 1,815,096,000.30 and 520,161,728.20 is: 780,134,306.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,231,961.80 : 1,815,096,000.30 = 520,161,728.20 : x
  2. Step 2: Convert to fraction form
    1,210,231,961.80/1,815,096,000.30 = 520,161,728.20/x
  3. Step 3: Cross multiply
    1,210,231,961.80x = 1,815,096,000.30 × 520,161,728.20
  4. Step 4: Simplify right side
    1,210,231,961.80x = 944,143,472,364,955,648
  5. Step 5: Solve for x
    x = 944,143,472,364,955,648/1,210,231,961.80
  6. Step 6: Final answer
    x = 780,134,306.62

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1.5x scale

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.