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Finding the Fourth Proportional to 520,679.01, 780,210.69 and 361,066.28

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Solution

The fourth proportional to 520,679.01, 780,210.69 and 361,066.28 is: 541,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,679.01 : 780,210.69 = 361,066.28 : x
  2. Step 2: Convert to fraction form
    520,679.01/780,210.69 = 361,066.28/x
  3. Step 3: Cross multiply
    520,679.01x = 780,210.69 × 361,066.28
  4. Step 4: Simplify right side
    520,679.01x = 281,707,771,454.53
  5. Step 5: Solve for x
    x = 281,707,771,454.53/520,679.01
  6. Step 6: Final answer
    x = 541,039.23

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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.