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Finding the Fourth Proportional to 768,898.89, 1,061,058.78 and 424,728.36

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Solution

The fourth proportional to 768,898.89, 1,061,058.78 and 424,728.36 is: 586,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,898.89 : 1,061,058.78 = 424,728.36 : x
  2. Step 2: Convert to fraction form
    768,898.89/1,061,058.78 = 424,728.36/x
  3. Step 3: Cross multiply
    768,898.89x = 1,061,058.78 × 424,728.36
  4. Step 4: Simplify right side
    768,898.89x = 450,661,755,493.00
  5. Step 5: Solve for x
    x = 450,661,755,493.00/768,898.89
  6. Step 6: Final answer
    x = 586,113.16

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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.