Home / 1,280,120,731.20-1,920,181,096.80-885,578,932.80

Finding the Fourth Proportional to 1,280,120,731.20, 1,920,181,096.80 and 885,578,932.80

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Solution

The fourth proportional to 1,280,120,731.20, 1,920,181,096.80 and 885,578,932.80 is: 1,328,368,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,120,731.20 : 1,920,181,096.80 = 885,578,932.80 : x
  2. Step 2: Convert to fraction form
    1,280,120,731.20/1,920,181,096.80 = 885,578,932.80/x
  3. Step 3: Cross multiply
    1,280,120,731.20x = 1,920,181,096.80 × 885,578,932.80
  4. Step 4: Simplify right side
    1,280,120,731.20x = 1,700,471,926,486,877,440
  5. Step 5: Solve for x
    x = 1,700,471,926,486,877,440/1,280,120,731.20
  6. Step 6: Final answer
    x = 1,328,368,399.20

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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.