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Finding the Fourth Proportional to 496,976.40, 745,464.60 and 458,485.20

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Solution

The fourth proportional to 496,976.40, 745,464.60 and 458,485.20 is: 687,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,976.40 : 745,464.60 = 458,485.20 : x
  2. Step 2: Convert to fraction form
    496,976.40/745,464.60 = 458,485.20/x
  3. Step 3: Cross multiply
    496,976.40x = 745,464.60 × 458,485.20
  4. Step 4: Simplify right side
    496,976.40x = 341,784,486,223.92
  5. Step 5: Solve for x
    x = 341,784,486,223.92/496,976.40
  6. Step 6: Final answer
    x = 687,727.80

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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.