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Finding the Fourth Proportional to 493,300.20, 739,950.30 and 392,916.90

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Solution

The fourth proportional to 493,300.20, 739,950.30 and 392,916.90 is: 589,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,300.20 : 739,950.30 = 392,916.90 : x
  2. Step 2: Convert to fraction form
    493,300.20/739,950.30 = 392,916.90/x
  3. Step 3: Cross multiply
    493,300.20x = 739,950.30 × 392,916.90
  4. Step 4: Simplify right side
    493,300.20x = 290,738,978,030.07
  5. Step 5: Solve for x
    x = 290,738,978,030.07/493,300.20
  6. Step 6: Final answer
    x = 589,375.35

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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.