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Finding the Fourth Proportional to 520,322.65, 780,618.30 and 160,485.41

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Solution

The fourth proportional to 520,322.65, 780,618.30 and 160,485.41 is: 240,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,322.65 : 780,618.30 = 160,485.41 : x
  2. Step 2: Convert to fraction form
    520,322.65/780,618.30 = 160,485.41/x
  3. Step 3: Cross multiply
    520,322.65x = 780,618.30 × 160,485.41
  4. Step 4: Simplify right side
    520,322.65x = 125,277,849,880.55
  5. Step 5: Solve for x
    x = 125,277,849,880.55/520,322.65
  6. Step 6: Final answer
    x = 240,769.55

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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.