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Finding the Fourth Proportional to 626,832, 865,028.16 and 358,560

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Solution

The fourth proportional to 626,832, 865,028.16 and 358,560 is: 494,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,832 : 865,028.16 = 358,560 : x
  2. Step 2: Convert to fraction form
    626,832/865,028.16 = 358,560/x
  3. Step 3: Cross multiply
    626,832x = 865,028.16 × 358,560
  4. Step 4: Simplify right side
    626,832x = 310,164,497,049.60
  5. Step 5: Solve for x
    x = 310,164,497,049.60/626,832
  6. Step 6: Final answer
    x = 494,812.80

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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.