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Finding the Fourth Proportional to 503,354.79, 755,031.38 and 345,103.47

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Solution

The fourth proportional to 503,354.79, 755,031.38 and 345,103.47 is: 517,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,354.79 : 755,031.38 = 345,103.47 : x
  2. Step 2: Convert to fraction form
    503,354.79/755,031.38 = 345,103.47/x
  3. Step 3: Cross multiply
    503,354.79x = 755,031.38 × 345,103.47
  4. Step 4: Simplify right side
    503,354.79x = 260,563,947,471.37
  5. Step 5: Solve for x
    x = 260,563,947,471.37/503,354.79
  6. Step 6: Final answer
    x = 517,654.65

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1.5x scale

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.