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Finding the Fourth Proportional to 529,727.49, 731,021.49 and 312,062.67

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Solution

The fourth proportional to 529,727.49, 731,021.49 and 312,062.67 is: 430,645.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,727.49 : 731,021.49 = 312,062.67 : x
  2. Step 2: Convert to fraction form
    529,727.49/731,021.49 = 312,062.67/x
  3. Step 3: Cross multiply
    529,727.49x = 731,021.49 × 312,062.67
  4. Step 4: Simplify right side
    529,727.49x = 228,124,517,996.78
  5. Step 5: Solve for x
    x = 228,124,517,996.78/529,727.49
  6. Step 6: Final answer
    x = 430,645.04

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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.