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Finding the Fourth Proportional to 623,843, 860,987.58 and 351,966.68

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Solution

The fourth proportional to 623,843, 860,987.58 and 351,966.68 is: 485,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,843 : 860,987.58 = 351,966.68 : x
  2. Step 2: Convert to fraction form
    623,843/860,987.58 = 351,966.68/x
  3. Step 3: Cross multiply
    623,843x = 860,987.58 × 351,966.68
  4. Step 4: Simplify right side
    623,843x = 303,038,940,053.83
  5. Step 5: Solve for x
    x = 303,038,940,053.83/623,843
  6. Step 6: Final answer
    x = 485,761.55

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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.