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Finding the Fourth Proportional to 623,458.42, 860,372.48 and 336,978.43

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Solution

The fourth proportional to 623,458.42, 860,372.48 and 336,978.43 is: 465,030.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,458.42 : 860,372.48 = 336,978.43 : x
  2. Step 2: Convert to fraction form
    623,458.42/860,372.48 = 336,978.43/x
  3. Step 3: Cross multiply
    623,458.42x = 860,372.48 × 336,978.43
  4. Step 4: Simplify right side
    623,458.42x = 289,926,966,217.12
  5. Step 5: Solve for x
    x = 289,926,966,217.12/623,458.42
  6. Step 6: Final answer
    x = 465,030.16

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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.