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Finding the Fourth Proportional to 708,793.67, 978,099.81 and 402,829.62

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Solution

The fourth proportional to 708,793.67, 978,099.81 and 402,829.62 is: 555,884.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,793.67 : 978,099.81 = 402,829.62 : x
  2. Step 2: Convert to fraction form
    708,793.67/978,099.81 = 402,829.62/x
  3. Step 3: Cross multiply
    708,793.67x = 978,099.81 × 402,829.62
  4. Step 4: Simplify right side
    708,793.67x = 394,007,574,784.37
  5. Step 5: Solve for x
    x = 394,007,574,784.37/708,793.67
  6. Step 6: Final answer
    x = 555,884.73

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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.