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Finding the Fourth Proportional to 620,682.80, 931,024.20 and 305,754.80

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Solution

The fourth proportional to 620,682.80, 931,024.20 and 305,754.80 is: 458,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,682.80 : 931,024.20 = 305,754.80 : x
  2. Step 2: Convert to fraction form
    620,682.80/931,024.20 = 305,754.80/x
  3. Step 3: Cross multiply
    620,682.80x = 931,024.20 × 305,754.80
  4. Step 4: Simplify right side
    620,682.80x = 284,665,118,066.16
  5. Step 5: Solve for x
    x = 284,665,118,066.16/620,682.80
  6. Step 6: Final answer
    x = 458,632.20

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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.