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Finding the Fourth Proportional to 660,102.40, 990,809.70 and 323,523.10

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Solution

The fourth proportional to 660,102.40, 990,809.70 and 323,523.10 is: 485,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,102.40 : 990,809.70 = 323,523.10 : x
  2. Step 2: Convert to fraction form
    660,102.40/990,809.70 = 323,523.10/x
  3. Step 3: Cross multiply
    660,102.40x = 990,809.70 × 323,523.10
  4. Step 4: Simplify right side
    660,102.40x = 320,549,825,654.07
  5. Step 5: Solve for x
    x = 320,549,825,654.07/660,102.40
  6. Step 6: Final answer
    x = 485,606.21

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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.