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Finding the Fourth Proportional to 628,989, 868,024.26 and 360,717

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Solution

The fourth proportional to 628,989, 868,024.26 and 360,717 is: 497,800.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,989 : 868,024.26 = 360,717 : x
  2. Step 2: Convert to fraction form
    628,989/868,024.26 = 360,717/x
  3. Step 3: Cross multiply
    628,989x = 868,024.26 × 360,717
  4. Step 4: Simplify right side
    628,989x = 313,111,106,994.42
  5. Step 5: Solve for x
    x = 313,111,106,994.42/628,989
  6. Step 6: Final answer
    x = 497,800.61

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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.