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Finding the Fourth Proportional to 520,141.30, 780,211.95 and 270,790.90

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Solution

The fourth proportional to 520,141.30, 780,211.95 and 270,790.90 is: 406,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,141.30 : 780,211.95 = 270,790.90 : x
  2. Step 2: Convert to fraction form
    520,141.30/780,211.95 = 270,790.90/x
  3. Step 3: Cross multiply
    520,141.30x = 780,211.95 × 270,790.90
  4. Step 4: Simplify right side
    520,141.30x = 211,274,296,131.26
  5. Step 5: Solve for x
    x = 211,274,296,131.26/520,141.30
  6. Step 6: Final answer
    x = 406,186.35

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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.