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Finding the Fourth Proportional to 542,489.20, 813,567.66 and 375,085.28

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Solution

The fourth proportional to 542,489.20, 813,567.66 and 375,085.28 is: 562,513.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,489.20 : 813,567.66 = 375,085.28 : x
  2. Step 2: Convert to fraction form
    542,489.20/813,567.66 = 375,085.28/x
  3. Step 3: Cross multiply
    542,489.20x = 813,567.66 × 375,085.28
  4. Step 4: Simplify right side
    542,489.20x = 305,157,253,550.05
  5. Step 5: Solve for x
    x = 305,157,253,550.05/542,489.20
  6. Step 6: Final answer
    x = 562,513.05

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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.