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Finding the Fourth Proportional to 624,573.03, 936,719.45 and 287,289.78

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Solution

The fourth proportional to 624,573.03, 936,719.45 and 287,289.78 is: 430,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,573.03 : 936,719.45 = 287,289.78 : x
  2. Step 2: Convert to fraction form
    624,573.03/936,719.45 = 287,289.78/x
  3. Step 3: Cross multiply
    624,573.03x = 936,719.45 × 287,289.78
  4. Step 4: Simplify right side
    624,573.03x = 269,109,924,712.22
  5. Step 5: Solve for x
    x = 269,109,924,712.22/624,573.03
  6. Step 6: Final answer
    x = 430,870.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.