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Finding the Fourth Proportional to 492,894.67, 679,936.07 and 428,218.59

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Solution

The fourth proportional to 492,894.67, 679,936.07 and 428,218.59 is: 590,717.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,894.67 : 679,936.07 = 428,218.59 : x
  2. Step 2: Convert to fraction form
    492,894.67/679,936.07 = 428,218.59/x
  3. Step 3: Cross multiply
    492,894.67x = 679,936.07 × 428,218.59
  4. Step 4: Simplify right side
    492,894.67x = 291,161,263,044.45
  5. Step 5: Solve for x
    x = 291,161,263,044.45/492,894.67
  6. Step 6: Final answer
    x = 590,717.00

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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.