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Finding the Fourth Proportional to 487,668.40, 731,502.60 and 404,724.40

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Solution

The fourth proportional to 487,668.40, 731,502.60 and 404,724.40 is: 607,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,668.40 : 731,502.60 = 404,724.40 : x
  2. Step 2: Convert to fraction form
    487,668.40/731,502.60 = 404,724.40/x
  3. Step 3: Cross multiply
    487,668.40x = 731,502.60 × 404,724.40
  4. Step 4: Simplify right side
    487,668.40x = 296,056,950,883.44
  5. Step 5: Solve for x
    x = 296,056,950,883.44/487,668.40
  6. Step 6: Final answer
    x = 607,086.60

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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.