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Finding the Fourth Proportional to 626,874.75, 865,087.17 and 358,602.75

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Solution

The fourth proportional to 626,874.75, 865,087.17 and 358,602.75 is: 494,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,874.75 : 865,087.17 = 358,602.75 : x
  2. Step 2: Convert to fraction form
    626,874.75/865,087.17 = 358,602.75/x
  3. Step 3: Cross multiply
    626,874.75x = 865,087.17 × 358,602.75
  4. Step 4: Simplify right side
    626,874.75x = 310,222,638,151.72
  5. Step 5: Solve for x
    x = 310,222,638,151.72/626,874.75
  6. Step 6: Final answer
    x = 494,871.80

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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.