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Finding the Fourth Proportional to 789,892.86, 1,090,048.86 and 427,315.87

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Solution

The fourth proportional to 789,892.86, 1,090,048.86 and 427,315.87 is: 589,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,892.86 : 1,090,048.86 = 427,315.87 : x
  2. Step 2: Convert to fraction form
    789,892.86/1,090,048.86 = 427,315.87/x
  3. Step 3: Cross multiply
    789,892.86x = 1,090,048.86 × 427,315.87
  4. Step 4: Simplify right side
    789,892.86x = 465,795,176,953.41
  5. Step 5: Solve for x
    x = 465,795,176,953.41/789,892.86
  6. Step 6: Final answer
    x = 589,694.12

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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.