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Finding the Fourth Proportional to 529,701.28, 731,103.86 and 348,431.11

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Solution

The fourth proportional to 529,701.28, 731,103.86 and 348,431.11 is: 480,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,701.28 : 731,103.86 = 348,431.11 : x
  2. Step 2: Convert to fraction form
    529,701.28/731,103.86 = 348,431.11/x
  3. Step 3: Cross multiply
    529,701.28x = 731,103.86 × 348,431.11
  4. Step 4: Simplify right side
    529,701.28x = 254,739,329,465.09
  5. Step 5: Solve for x
    x = 254,739,329,465.09/529,701.28
  6. Step 6: Final answer
    x = 480,911.30

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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.