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Finding the Fourth Proportional to 485,300.64, 727,507.44 and 410,900.16

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Solution

The fourth proportional to 485,300.64, 727,507.44 and 410,900.16 is: 615,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,300.64 : 727,507.44 = 410,900.16 : x
  2. Step 2: Convert to fraction form
    485,300.64/727,507.44 = 410,900.16/x
  3. Step 3: Cross multiply
    485,300.64x = 727,507.44 × 410,900.16
  4. Step 4: Simplify right side
    485,300.64x = 298,932,923,497.19
  5. Step 5: Solve for x
    x = 298,932,923,497.19/485,300.64
  6. Step 6: Final answer
    x = 615,974.72

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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.