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Finding the Fourth Proportional to 543,307.80, 814,961.70 and 403,339.80

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Solution

The fourth proportional to 543,307.80, 814,961.70 and 403,339.80 is: 605,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,307.80 : 814,961.70 = 403,339.80 : x
  2. Step 2: Convert to fraction form
    543,307.80/814,961.70 = 403,339.80/x
  3. Step 3: Cross multiply
    543,307.80x = 814,961.70 × 403,339.80
  4. Step 4: Simplify right side
    543,307.80x = 328,706,489,085.66
  5. Step 5: Solve for x
    x = 328,706,489,085.66/543,307.80
  6. Step 6: Final answer
    x = 605,009.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.