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Finding the Fourth Proportional to 520,382.62, 780,627.48 and 196,443.57

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Solution

The fourth proportional to 520,382.62, 780,627.48 and 196,443.57 is: 294,685.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,382.62 : 780,627.48 = 196,443.57 : x
  2. Step 2: Convert to fraction form
    520,382.62/780,627.48 = 196,443.57/x
  3. Step 3: Cross multiply
    520,382.62x = 780,627.48 × 196,443.57
  4. Step 4: Simplify right side
    520,382.62x = 153,349,249,011.30
  5. Step 5: Solve for x
    x = 153,349,249,011.30/520,382.62
  6. Step 6: Final answer
    x = 294,685.57

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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.