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Finding the Fourth Proportional to 499,350.40, 749,025.60 and 430,921.60

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Solution

The fourth proportional to 499,350.40, 749,025.60 and 430,921.60 is: 646,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,350.40 : 749,025.60 = 430,921.60 : x
  2. Step 2: Convert to fraction form
    499,350.40/749,025.60 = 430,921.60/x
  3. Step 3: Cross multiply
    499,350.40x = 749,025.60 × 430,921.60
  4. Step 4: Simplify right side
    499,350.40x = 322,771,309,992.96
  5. Step 5: Solve for x
    x = 322,771,309,992.96/499,350.40
  6. Step 6: Final answer
    x = 646,382.40

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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.