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Finding the Fourth Proportional to 623,668.10, 860,661.87 and 337,188.20

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Solution

The fourth proportional to 623,668.10, 860,661.87 and 337,188.20 is: 465,319.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,668.10 : 860,661.87 = 337,188.20 : x
  2. Step 2: Convert to fraction form
    623,668.10/860,661.87 = 337,188.20/x
  3. Step 3: Cross multiply
    623,668.10x = 860,661.87 × 337,188.20
  4. Step 4: Simplify right side
    623,668.10x = 290,205,026,753.93
  5. Step 5: Solve for x
    x = 290,205,026,753.93/623,668.10
  6. Step 6: Final answer
    x = 465,319.66

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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.