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Finding the Fourth Proportional to 493,111.80, 740,358.90 and 306,487.80

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Solution

The fourth proportional to 493,111.80, 740,358.90 and 306,487.80 is: 460,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,111.80 : 740,358.90 = 306,487.80 : x
  2. Step 2: Convert to fraction form
    493,111.80/740,358.90 = 306,487.80/x
  3. Step 3: Cross multiply
    493,111.80x = 740,358.90 × 306,487.80
  4. Step 4: Simplify right side
    493,111.80x = 226,910,970,471.42
  5. Step 5: Solve for x
    x = 226,910,970,471.42/493,111.80
  6. Step 6: Final answer
    x = 460,161.31

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1.5x scale

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.