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Finding the Fourth Proportional to 638,309.60, 956,650.35 and 338,933.60

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Solution

The fourth proportional to 638,309.60, 956,650.35 and 338,933.60 is: 507,968.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,309.60 : 956,650.35 = 338,933.60 : x
  2. Step 2: Convert to fraction form
    638,309.60/956,650.35 = 338,933.60/x
  3. Step 3: Cross multiply
    638,309.60x = 956,650.35 × 338,933.60
  4. Step 4: Simplify right side
    638,309.60x = 324,240,947,066.76
  5. Step 5: Solve for x
    x = 324,240,947,066.76/638,309.60
  6. Step 6: Final answer
    x = 507,968.15

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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.