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Finding the Fourth Proportional to 750,678.72, 1,035,921.60 and 411,144

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Solution

The fourth proportional to 750,678.72, 1,035,921.60 and 411,144 is: 567,370.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,678.72 : 1,035,921.60 = 411,144 : x
  2. Step 2: Convert to fraction form
    750,678.72/1,035,921.60 = 411,144/x
  3. Step 3: Cross multiply
    750,678.72x = 1,035,921.60 × 411,144
  4. Step 4: Simplify right side
    750,678.72x = 425,912,950,310.40
  5. Step 5: Solve for x
    x = 425,912,950,310.40/750,678.72
  6. Step 6: Final answer
    x = 567,370.49

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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.