Home / 645,224.98-890,433.33-354,859.00

Finding the Fourth Proportional to 645,224.98, 890,433.33 and 354,859.00

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Solution

The fourth proportional to 645,224.98, 890,433.33 and 354,859.00 is: 489,718.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,224.98 : 890,433.33 = 354,859.00 : x
  2. Step 2: Convert to fraction form
    645,224.98/890,433.33 = 354,859.00/x
  3. Step 3: Cross multiply
    645,224.98x = 890,433.33 × 354,859.00
  4. Step 4: Simplify right side
    645,224.98x = 315,978,284,498.44
  5. Step 5: Solve for x
    x = 315,978,284,498.44/645,224.98
  6. Step 6: Final answer
    x = 489,718.00

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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.