Home / 656,143.42-983,865.20-339,815.74

Finding the Fourth Proportional to 656,143.42, 983,865.20 and 339,815.74

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Solution

The fourth proportional to 656,143.42, 983,865.20 and 339,815.74 is: 509,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,143.42 : 983,865.20 = 339,815.74 : x
  2. Step 2: Convert to fraction form
    656,143.42/983,865.20 = 339,815.74/x
  3. Step 3: Cross multiply
    656,143.42x = 983,865.20 × 339,815.74
  4. Step 4: Simplify right side
    656,143.42x = 334,332,880,998.25
  5. Step 5: Solve for x
    x = 334,332,880,998.25/656,143.42
  6. Step 6: Final answer
    x = 509,542.38

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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.