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Finding the Fourth Proportional to 658,846.98, 908,857.20 and 400,802.85

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Solution

The fourth proportional to 658,846.98, 908,857.20 and 400,802.85 is: 552,894.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,846.98 : 908,857.20 = 400,802.85 : x
  2. Step 2: Convert to fraction form
    658,846.98/908,857.20 = 400,802.85/x
  3. Step 3: Cross multiply
    658,846.98x = 908,857.20 × 400,802.85
  4. Step 4: Simplify right side
    658,846.98x = 364,272,556,003.02
  5. Step 5: Solve for x
    x = 364,272,556,003.02/658,846.98
  6. Step 6: Final answer
    x = 552,894.02

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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.