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Finding the Fourth Proportional to 719,020.83, 992,269.50 and 396,751.68

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Solution

The fourth proportional to 719,020.83, 992,269.50 and 396,751.68 is: 547,528.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,020.83 : 992,269.50 = 396,751.68 : x
  2. Step 2: Convert to fraction form
    719,020.83/992,269.50 = 396,751.68/x
  3. Step 3: Cross multiply
    719,020.83x = 992,269.50 × 396,751.68
  4. Step 4: Simplify right side
    719,020.83x = 393,684,591,137.76
  5. Step 5: Solve for x
    x = 393,684,591,137.76/719,020.83
  6. Step 6: Final answer
    x = 547,528.77

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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.