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Finding the Fourth Proportional to 624,616.10, 936,783.86 and 287,332.80

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Solution

The fourth proportional to 624,616.10, 936,783.86 and 287,332.80 is: 430,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.10 : 936,783.86 = 287,332.80 : x
  2. Step 2: Convert to fraction form
    624,616.10/936,783.86 = 287,332.80/x
  3. Step 3: Cross multiply
    624,616.10x = 936,783.86 × 287,332.80
  4. Step 4: Simplify right side
    624,616.10x = 269,168,729,488.61
  5. Step 5: Solve for x
    x = 269,168,729,488.61/624,616.10
  6. Step 6: Final answer
    x = 430,934.66

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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.