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Finding the Fourth Proportional to 513,367.60, 708,423.96 and 283,927

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Solution

The fourth proportional to 513,367.60, 708,423.96 and 283,927 is: 391,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,367.60 : 708,423.96 = 283,927 : x
  2. Step 2: Convert to fraction form
    513,367.60/708,423.96 = 283,927/x
  3. Step 3: Cross multiply
    513,367.60x = 708,423.96 × 283,927
  4. Step 4: Simplify right side
    513,367.60x = 201,140,689,690.92
  5. Step 5: Solve for x
    x = 201,140,689,690.92/513,367.60
  6. Step 6: Final answer
    x = 391,806.36

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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.