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Finding the Fourth Proportional to 623,716.29, 860,532 and 381,746.61

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Solution

The fourth proportional to 623,716.29, 860,532 and 381,746.61 is: 526,690.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,716.29 : 860,532 = 381,746.61 : x
  2. Step 2: Convert to fraction form
    623,716.29/860,532 = 381,746.61/x
  3. Step 3: Cross multiply
    623,716.29x = 860,532 × 381,746.61
  4. Step 4: Simplify right side
    623,716.29x = 328,505,173,796.52
  5. Step 5: Solve for x
    x = 328,505,173,796.52/623,716.29
  6. Step 6: Final answer
    x = 526,690.07

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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.