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Finding the Fourth Proportional to 493,886.40, 740,829.60 and 486,013.20

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Solution

The fourth proportional to 493,886.40, 740,829.60 and 486,013.20 is: 729,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,886.40 : 740,829.60 = 486,013.20 : x
  2. Step 2: Convert to fraction form
    493,886.40/740,829.60 = 486,013.20/x
  3. Step 3: Cross multiply
    493,886.40x = 740,829.60 × 486,013.20
  4. Step 4: Simplify right side
    493,886.40x = 360,052,964,550.72
  5. Step 5: Solve for x
    x = 360,052,964,550.72/493,886.40
  6. Step 6: Final answer
    x = 729,019.80

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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.