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Finding the Fourth Proportional to 542,751.12, 748,131.12 and 427,842.36

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Solution

The fourth proportional to 542,751.12, 748,131.12 and 427,842.36 is: 589,740.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,751.12 : 748,131.12 = 427,842.36 : x
  2. Step 2: Convert to fraction form
    542,751.12/748,131.12 = 427,842.36/x
  3. Step 3: Cross multiply
    542,751.12x = 748,131.12 × 427,842.36
  4. Step 4: Simplify right side
    542,751.12x = 320,082,183,970.24
  5. Step 5: Solve for x
    x = 320,082,183,970.24/542,751.12
  6. Step 6: Final answer
    x = 589,740.26

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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.