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Finding the Fourth Proportional to 624,574.04, 936,720.96 and 287,290.78

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Solution

The fourth proportional to 624,574.04, 936,720.96 and 287,290.78 is: 430,871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,574.04 : 936,720.96 = 287,290.78 : x
  2. Step 2: Convert to fraction form
    624,574.04/936,720.96 = 287,290.78/x
  3. Step 3: Cross multiply
    624,574.04x = 936,720.96 × 287,290.78
  4. Step 4: Simplify right side
    624,574.04x = 269,111,295,240.75
  5. Step 5: Solve for x
    x = 269,111,295,240.75/624,574.04
  6. Step 6: Final answer
    x = 430,871.73

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Similar ratio
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1.5x scale

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.