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Finding the Fourth Proportional to 623,908.07, 860,993.13 and 337,428.15

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Solution

The fourth proportional to 623,908.07, 860,993.13 and 337,428.15 is: 465,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,908.07 : 860,993.13 = 337,428.15 : x
  2. Step 2: Convert to fraction form
    623,908.07/860,993.13 = 337,428.15/x
  3. Step 3: Cross multiply
    623,908.07x = 860,993.13 × 337,428.15
  4. Step 4: Simplify right side
    623,908.07x = 290,523,319,018.61
  5. Step 5: Solve for x
    x = 290,523,319,018.61/623,908.07
  6. Step 6: Final answer
    x = 465,650.85

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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.