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Finding the Fourth Proportional to 479,430.30, 719,145.45 and 269,040.90

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Solution

The fourth proportional to 479,430.30, 719,145.45 and 269,040.90 is: 403,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,430.30 : 719,145.45 = 269,040.90 : x
  2. Step 2: Convert to fraction form
    479,430.30/719,145.45 = 269,040.90/x
  3. Step 3: Cross multiply
    479,430.30x = 719,145.45 × 269,040.90
  4. Step 4: Simplify right side
    479,430.30x = 193,479,539,098.91
  5. Step 5: Solve for x
    x = 193,479,539,098.91/479,430.30
  6. Step 6: Final answer
    x = 403,561.35

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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.