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Finding the Fourth Proportional to 661,583.81, 992,383.39 and 629,316

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Solution

The fourth proportional to 661,583.81, 992,383.39 and 629,316 is: 943,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,583.81 : 992,383.39 = 629,316 : x
  2. Step 2: Convert to fraction form
    661,583.81/992,383.39 = 629,316/x
  3. Step 3: Cross multiply
    661,583.81x = 992,383.39 × 629,316
  4. Step 4: Simplify right side
    661,583.81x = 624,522,746,247.89
  5. Step 5: Solve for x
    x = 624,522,746,247.89/661,583.81
  6. Step 6: Final answer
    x = 943,981.30

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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.