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Finding the Fourth Proportional to 623,590, 860,788.20 and 408,743.92

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Solution

The fourth proportional to 623,590, 860,788.20 and 408,743.92 is: 564,219.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,590 : 860,788.20 = 408,743.92 : x
  2. Step 2: Convert to fraction form
    623,590/860,788.20 = 408,743.92/x
  3. Step 3: Cross multiply
    623,590x = 860,788.20 × 408,743.92
  4. Step 4: Simplify right side
    623,590x = 351,841,943,157.74
  5. Step 5: Solve for x
    x = 351,841,943,157.74/623,590
  6. Step 6: Final answer
    x = 564,219.99

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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.