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Finding the Fourth Proportional to 458,632.40, 686,566.20 and 403,336.40

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Solution

The fourth proportional to 458,632.40, 686,566.20 and 403,336.40 is: 603,788.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,632.40 : 686,566.20 = 403,336.40 : x
  2. Step 2: Convert to fraction form
    458,632.40/686,566.20 = 403,336.40/x
  3. Step 3: Cross multiply
    458,632.40x = 686,566.20 × 403,336.40
  4. Step 4: Simplify right side
    458,632.40x = 276,917,139,469.68
  5. Step 5: Solve for x
    x = 276,917,139,469.68/458,632.40
  6. Step 6: Final answer
    x = 603,788.87

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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.