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Finding the Fourth Proportional to 514,911.28, 710,619.48 and 285,540.39

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Solution

The fourth proportional to 514,911.28, 710,619.48 and 285,540.39 is: 394,068.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,911.28 : 710,619.48 = 285,540.39 : x
  2. Step 2: Convert to fraction form
    514,911.28/710,619.48 = 285,540.39/x
  3. Step 3: Cross multiply
    514,911.28x = 710,619.48 × 285,540.39
  4. Step 4: Simplify right side
    514,911.28x = 202,910,563,460.80
  5. Step 5: Solve for x
    x = 202,910,563,460.80/514,911.28
  6. Step 6: Final answer
    x = 394,068.98

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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.