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Finding the Fourth Proportional to 393,519.67, 589,832.08 and 346,041.72

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Solution

The fourth proportional to 393,519.67, 589,832.08 and 346,041.72 is: 518,669.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,519.67 : 589,832.08 = 346,041.72 : x
  2. Step 2: Convert to fraction form
    393,519.67/589,832.08 = 346,041.72/x
  3. Step 3: Cross multiply
    393,519.67x = 589,832.08 × 346,041.72
  4. Step 4: Simplify right side
    393,519.67x = 204,106,506,609.27
  5. Step 5: Solve for x
    x = 204,106,506,609.27/393,519.67
  6. Step 6: Final answer
    x = 518,669.14

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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.