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Finding the Fourth Proportional to 430,606.80, 644,330.43 and 359,353.53

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Solution

The fourth proportional to 430,606.80, 644,330.43 and 359,353.53 is: 537,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,606.80 : 644,330.43 = 359,353.53 : x
  2. Step 2: Convert to fraction form
    430,606.80/644,330.43 = 359,353.53/x
  3. Step 3: Cross multiply
    430,606.80x = 644,330.43 × 359,353.53
  4. Step 4: Simplify right side
    430,606.80x = 231,542,414,506.92
  5. Step 5: Solve for x
    x = 231,542,414,506.92/430,606.80
  6. Step 6: Final answer
    x = 537,711.93

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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.