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Finding the Fourth Proportional to 493,893.40, 740,840.10 and 486,020.20

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Solution

The fourth proportional to 493,893.40, 740,840.10 and 486,020.20 is: 729,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,893.40 : 740,840.10 = 486,020.20 : x
  2. Step 2: Convert to fraction form
    493,893.40/740,840.10 = 486,020.20/x
  3. Step 3: Cross multiply
    493,893.40x = 740,840.10 × 486,020.20
  4. Step 4: Simplify right side
    493,893.40x = 360,063,253,570.02
  5. Step 5: Solve for x
    x = 360,063,253,570.02/493,893.40
  6. Step 6: Final answer
    x = 729,030.30

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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.