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Finding the Fourth Proportional to 529,911.48, 731,103.66 and 328,668.60

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Solution

The fourth proportional to 529,911.48, 731,103.66 and 328,668.60 is: 453,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,911.48 : 731,103.66 = 328,668.60 : x
  2. Step 2: Convert to fraction form
    529,911.48/731,103.66 = 328,668.60/x
  3. Step 3: Cross multiply
    529,911.48x = 731,103.66 × 328,668.60
  4. Step 4: Simplify right side
    529,911.48x = 240,290,816,387.08
  5. Step 5: Solve for x
    x = 240,290,816,387.08/529,911.48
  6. Step 6: Final answer
    x = 453,454.63

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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.