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Finding the Third Proportional to 392,336 and 555,307.75

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Solution

The third proportional to 392,336 and 555,307.75 is: 785,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,336 : 555,307.75 = 555,307.75 : x
  2. Step 2: Convert to fraction form
    392,336/555,307.75 = 555,307.75/x
  3. Step 3: Cross multiply
    392,336x = 555,307.75 × 555,307.75
  4. Step 4: Simplify right side
    392,336x = 308,366,697,210.06
  5. Step 5: Solve for x
    x = 308,366,697,210.06/392,336
  6. Step 6: Final answer
    x = 785,976.04

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.