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Finding the Fourth Proportional to 789,866.62, 1,090,011 and 427,289.02

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Solution

The fourth proportional to 789,866.62, 1,090,011 and 427,289.02 is: 589,656.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,866.62 : 1,090,011 = 427,289.02 : x
  2. Step 2: Convert to fraction form
    789,866.62/1,090,011 = 427,289.02/x
  3. Step 3: Cross multiply
    789,866.62x = 1,090,011 × 427,289.02
  4. Step 4: Simplify right side
    789,866.62x = 465,749,731,979.22
  5. Step 5: Solve for x
    x = 465,749,731,979.22/789,866.62
  6. Step 6: Final answer
    x = 589,656.18

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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.