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Finding the Fourth Proportional to 659,330.68, 989,173.54 and 339,308.16

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Solution

The fourth proportional to 659,330.68, 989,173.54 and 339,308.16 is: 509,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,330.68 : 989,173.54 = 339,308.16 : x
  2. Step 2: Convert to fraction form
    659,330.68/989,173.54 = 339,308.16/x
  3. Step 3: Cross multiply
    659,330.68x = 989,173.54 × 339,308.16
  4. Step 4: Simplify right side
    659,330.68x = 335,634,653,778.09
  5. Step 5: Solve for x
    x = 335,634,653,778.09/659,330.68
  6. Step 6: Final answer
    x = 509,053.60

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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.