Home / 807,468,912.69-1,211,418,686.07-289,903,837.20

Finding the Fourth Proportional to 807,468,912.69, 1,211,418,686.07 and 289,903,837.20

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Solution

The fourth proportional to 807,468,912.69, 1,211,418,686.07 and 289,903,837.20 is: 434,933,060.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,468,912.69 : 1,211,418,686.07 = 289,903,837.20 : x
  2. Step 2: Convert to fraction form
    807,468,912.69/1,211,418,686.07 = 289,903,837.20/x
  3. Step 3: Cross multiply
    807,468,912.69x = 1,211,418,686.07 × 289,903,837.20
  4. Step 4: Simplify right side
    807,468,912.69x = 351,194,925,547,475,136
  5. Step 5: Solve for x
    x = 351,194,925,547,475,136/807,468,912.69
  6. Step 6: Final answer
    x = 434,933,060.61

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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.