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Finding the Fourth Proportional to 493,890.40, 740,835.60 and 486,017.20

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Solution

The fourth proportional to 493,890.40, 740,835.60 and 486,017.20 is: 729,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,890.40 : 740,835.60 = 486,017.20 : x
  2. Step 2: Convert to fraction form
    493,890.40/740,835.60 = 486,017.20/x
  3. Step 3: Cross multiply
    493,890.40x = 740,835.60 × 486,017.20
  4. Step 4: Simplify right side
    493,890.40x = 360,058,843,972.32
  5. Step 5: Solve for x
    x = 360,058,843,972.32/493,890.40
  6. Step 6: Final answer
    x = 729,025.80

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Similar ratio
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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.