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Finding the Fourth Proportional to 638,633.60, 957,950.40 and 480,003.20

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Solution

The fourth proportional to 638,633.60, 957,950.40 and 480,003.20 is: 720,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,633.60 : 957,950.40 = 480,003.20 : x
  2. Step 2: Convert to fraction form
    638,633.60/957,950.40 = 480,003.20/x
  3. Step 3: Cross multiply
    638,633.60x = 957,950.40 × 480,003.20
  4. Step 4: Simplify right side
    638,633.60x = 459,819,257,441.28
  5. Step 5: Solve for x
    x = 459,819,257,441.28/638,633.60
  6. Step 6: Final answer
    x = 720,004.80

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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.