Home / 999,316.54-1,379,136.26-636,903.10

Finding the Fourth Proportional to 999,316.54, 1,379,136.26 and 636,903.10

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Solution

The fourth proportional to 999,316.54, 1,379,136.26 and 636,903.10 is: 878,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,316.54 : 1,379,136.26 = 636,903.10 : x
  2. Step 2: Convert to fraction form
    999,316.54/1,379,136.26 = 636,903.10/x
  3. Step 3: Cross multiply
    999,316.54x = 1,379,136.26 × 636,903.10
  4. Step 4: Simplify right side
    999,316.54x = 878,376,149,236.21
  5. Step 5: Solve for x
    x = 878,376,149,236.21/999,316.54
  6. Step 6: Final answer
    x = 878,976.90

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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.