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Finding the Fourth Proportional to 624,615.60, 936,783 and 287,332.42

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Solution

The fourth proportional to 624,615.60, 936,783 and 287,332.42 is: 430,934.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,615.60 : 936,783 = 287,332.42 : x
  2. Step 2: Convert to fraction form
    624,615.60/936,783 = 287,332.42/x
  3. Step 3: Cross multiply
    624,615.60x = 936,783 × 287,332.42
  4. Step 4: Simplify right side
    624,615.60x = 269,168,126,404.86
  5. Step 5: Solve for x
    x = 269,168,126,404.86/624,615.60
  6. Step 6: Final answer
    x = 430,934.04

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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.