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Finding the Fourth Proportional to 459,706.86, 633,991.68 and 321,815.16

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Solution

The fourth proportional to 459,706.86, 633,991.68 and 321,815.16 is: 443,822.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,706.86 : 633,991.68 = 321,815.16 : x
  2. Step 2: Convert to fraction form
    459,706.86/633,991.68 = 321,815.16/x
  3. Step 3: Cross multiply
    459,706.86x = 633,991.68 × 321,815.16
  4. Step 4: Simplify right side
    459,706.86x = 204,028,133,937.87
  5. Step 5: Solve for x
    x = 204,028,133,937.87/459,706.86
  6. Step 6: Final answer
    x = 443,822.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.